61310457 has 24 divisors (see below), whose sum is σ = 97705608. Its totient is φ = 36806400.

The previous prime is 61310423. The next prime is 61310461. The reversal of 61310457 is 75401316.

61310457 is a `hidden beast` number, since 613 + 1 + 0 + 45 + 7 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 95481 + 61214976 = 309^2 + 7824^2 .

It is not a de Polignac number, because 61310457 - 2⁷ = 61310329 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 61310457.

It is not an unprimeable number, because it can be changed into a prime (61310057) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1594 + ... + 11187.

It is an arithmetic number, because the mean of its divisors is an integer number (4071067).

Almost surely, 2^61310457 is an apocalyptic number.

It is an amenable number.

61310457 is a deficient number, since it is larger than the sum of its proper divisors (36395151).

61310457 is a wasteful number, since it uses less digits than its factorization.

61310457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12841 (or 12838 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 27.

The square root of 61310457 is about 7830.0994246561. The cubic root of 61310457 is about 394.3164099223.

The spelling of 61310457 in words is "sixty-one million, three hundred ten thousand, four hundred fifty-seven".