61256115 has 32 divisors (see below), whose sum is σ = 109324800. Its totient is φ = 32542560.

The previous prime is 61256113. The next prime is 61256137. The reversal of 61256115 is 51165216.

It is a happy number.

It is not a de Polignac number, because 61256115 - 2¹ = 61256113 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 (61256113) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 41256 + ... + 42714.

It is an arithmetic number, because the mean of its divisors is an integer number (3416400).

Almost surely, 2^61256115 is an apocalyptic number.

61256115 is a deficient number, since it is larger than the sum of its proper divisors (48068685).

61256115 is a wasteful number, since it uses less digits than its factorization.

61256115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1784 (or 1778 counting only the distinct ones).

The product of its digits is 1800, while the sum is 27.

The square root of 61256115 is about 7826.6285845184. The cubic root of 61256115 is about 394.1998758250.

The spelling of 61256115 in words is "sixty-one million, two hundred fifty-six thousand, one hundred fifteen".