61255616 has 14 divisors (see below), whose sum is σ = 121554240. Its totient is φ = 30627776.

The previous prime is 61255613. The next prime is 61255643. The reversal of 61255616 is 61655216.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61255613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 478496 + ... + 478623.

Almost surely, 2^61255616 is an apocalyptic number.

It is an amenable number.

61255616 is a deficient number, since it is larger than the sum of its proper divisors (60298624).

61255616 is an equidigital number, since it uses as much as digits as its factorization.

61255616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 957131 (or 957121 counting only the distinct ones).

The product of its digits is 10800, while the sum is 32.

The square root of 61255616 is about 7826.5967061041. The cubic root of 61255616 is about 394.1988054215.

The spelling of 61255616 in words is "sixty-one million, two hundred fifty-five thousand, six hundred sixteen".