61560513 has 96 divisors (see below), whose sum is σ = 116736000. Its totient is φ = 31842720.

The previous prime is 61560509. The next prime is 61560517. The reversal of 61560513 is 31506516.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (61560509) and next prime (61560517).

It is not a de Polignac number, because 61560513 - 2² = 61560509 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (61560517) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 779208 + ... + 779286.

It is an arithmetic number, because the mean of its divisors is an integer number (1216000).

Almost surely, 2^61560513 is an apocalyptic number.

61560513 is a gapful number since it is divisible by the number (63) formed by its first and last digit.

It is an amenable number.

61560513 is a deficient number, since it is larger than the sum of its proper divisors (55175487).

61560513 is a wasteful number, since it uses less digits than its factorization.

61560513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152 (or 139 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 27.

The square root of 61560513 is about 7846.0507900472. The cubic root of 61560513 is about 394.8517587188.

The spelling of 61560513 in words is "sixty-one million, five hundred sixty thousand, five hundred thirteen".