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13252030501 = 29456966569
BaseRepresentation
bin11000101011110000…
…11111000000100101
31021012120000220022111
430111320133000211
5204120004434001
610030553001021
7646253254303
oct142570370045
937176026274
1013252030501
115690475726
12269a0b3171
131332675688
148da013273
15528637851
hex315e1f025

13252030501 has 4 divisors (see below), whose sum is σ = 13708997100. Its totient is φ = 12795063904.

The previous prime is 13252030469. The next prime is 13252030549. The reversal of 13252030501 is 10503025231.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 10503025231 = 22945864739.

It can be written as a sum of positive squares in 2 ways, for example, as 5967408001 + 7284622500 = 77249^2 + 85350^2 .

It is a cyclic number.

It is not a de Polignac number, because 13252030501 - 25 = 13252030469 is a prime.

It is a super-2 number, since 2×132520305012 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13252030601) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 228483256 + ... + 228483313.

It is an arithmetic number, because the mean of its divisors is an integer number (3427249275).

Almost surely, 213252030501 is an apocalyptic number.

It is an amenable number.

13252030501 is a deficient number, since it is larger than the sum of its proper divisors (456966599).

13252030501 is an equidigital number, since it uses as much as digits as its factorization.

13252030501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 456966598.

The product of its (nonzero) digits is 900, while the sum is 22.

Adding to 13252030501 its reverse (10503025231), we get a palindrome (23755055732).

The spelling of 13252030501 in words is "thirteen billion, two hundred fifty-two million, thirty thousand, five hundred one".

Divisors: 1 29 456966569 13252030501