Search a number
-
+
61470485 = 51912337
BaseRepresentation
bin1110101001111…
…1011100010101
311021200000122122
43222133130111
5111214023420
610033305325
71344330146
oct352373425
9137600578
1061470485
113177575a
1218705245
13c97338b
148241acd
1555e3725
hex3a9f715

61470485 has 12 divisors (see below), whose sum is σ = 74372844. Its totient is φ = 48773760.

The previous prime is 61470481. The next prime is 61470509. The reversal of 61470485 is 58407416.

It can be written as a sum of positive squares in 2 ways, for example, as 19298449 + 42172036 = 4393^2 + 6494^2 .

It is not a de Polignac number, because 61470485 - 22 = 61470481 is a prime.

It is a super-2 number, since 2×614704852 = 7557241052270450, which 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 (61470481) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 182237 + ... + 182573.

It is an arithmetic number, because the mean of its divisors is an integer number (6197737).

Almost surely, 261470485 is an apocalyptic number.

It is an amenable number.

61470485 is a deficient number, since it is larger than the sum of its proper divisors (12902359).

61470485 is an equidigital number, since it uses as much as digits as its factorization.

61470485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 724 (or 533 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 35.

The square root of 61470485 is about 7840.3115371776. The cubic root of 61470485 is about 394.6591836671.

The spelling of 61470485 in words is "sixty-one million, four hundred seventy thousand, four hundred eighty-five".

Divisors: 1 5 191 337 955 1685 36481 64367 182405 321835 12294097 61470485