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12500801 = 103121367
BaseRepresentation
bin101111101011…
…111101000001
3212112002212122
4233223331001
511200011201
61123534025
7211153325
oct57537501
925462778
1012500801
117069045
12422a315
132788c31
141935985
15116de1b
hexbebf41

12500801 has 4 divisors (see below), whose sum is σ = 12622272. Its totient is φ = 12379332.

The previous prime is 12500779. The next prime is 12500809. The reversal of 12500801 is 10800521.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 10800521 = 14337537.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-12500801 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12500801.

It is not an unprimeable number, because it can be changed into a prime (12500809) 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, 60581 + ... + 60786.

It is an arithmetic number, because the mean of its divisors is an integer number (3155568).

Almost surely, 212500801 is an apocalyptic number.

It is an amenable number.

12500801 is a deficient number, since it is larger than the sum of its proper divisors (121471).

12500801 is a wasteful number, since it uses less digits than its factorization.

12500801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121470.

The product of its (nonzero) digits is 80, while the sum is 17.

The square root of 12500801 is about 3535.6471826244. The cubic root of 12500801 is about 232.0843987916.

The spelling of 12500801 in words is "twelve million, five hundred thousand, eight hundred one".

Divisors: 1 103 121367 12500801