61545995 has 16 divisors (see below), whose sum is σ = 85598208. Its totient is φ = 41606880.

The previous prime is 61545989. The next prime is 61546007. The reversal of 61545995 is 59954516.

It is not a de Polignac number, because 61545995 - 2¹² = 61541899 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9899 + ... + 14868.

It is an arithmetic number, because the mean of its divisors is an integer number (5349888).

Almost surely, 2^61545995 is an apocalyptic number.

61545995 is a deficient number, since it is larger than the sum of its proper divisors (24052213).

61545995 is a wasteful number, since it uses less digits than its factorization.

61545995 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24850.

The product of its digits is 243000, while the sum is 44.

The square root of 61545995 is about 7845.1255566753. The cubic root of 61545995 is about 394.8207165878.

The spelling of 61545995 in words is "sixty-one million, five hundred forty-five thousand, nine hundred ninety-five".