61051564 has 24 divisors (see below), whose sum is σ = 122329088. Its totient is φ = 26116560.

The previous prime is 61051553. The next prime is 61051577. The reversal of 61051564 is 46515016.

61051564 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16309 + ... + 19699.

Almost surely, 2^61051564 is an apocalyptic number.

It is an amenable number.

61051564 is an abundant number, since it is smaller than the sum of its proper divisors (61277524).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61051564 is a wasteful number, since it uses less digits than its factorization.

61051564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4045 (or 4043 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 28.

The square root of 61051564 is about 7813.5500254366. The cubic root of 61051564 is about 393.7606059459.

The spelling of 61051564 in words is "sixty-one million, fifty-one thousand, five hundred sixty-four".