61542560 has 24 divisors (see below), whose sum is σ = 145394676. Its totient is φ = 24616960.

The previous prime is 61542557. The next prime is 61542563. The reversal of 61542560 is 6524516.

It is an interprime number because it is at equal distance from previous prime (61542557) and next prime (61542563).

It can be written as a sum of positive squares in 2 ways, for example, as 59660176 + 1882384 = 7724^2 + 1372^2 .

It is not an unprimeable number, because it can be changed into a prime (61542563) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 192161 + ... + 192480.

Almost surely, 2^61542560 is an apocalyptic number.

It is an amenable number.

61542560 is an abundant number, since it is smaller than the sum of its proper divisors (83852116).

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

61542560 is a wasteful number, since it uses less digits than its factorization.

61542560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 384656 (or 384648 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 29.

The square root of 61542560 is about 7844.9066278701. The cubic root of 61542560 is about 394.8133712174.

The spelling of 61542560 in words is "sixty-one million, five hundred forty-two thousand, five hundred sixty".