61552560 has 40 divisors (see below), whose sum is σ = 190813680. Its totient is φ = 16413952.

The previous prime is 61552541. The next prime is 61552567. The reversal of 61552560 is 6525516.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (61552567) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 127995 + ... + 128474.

It is an arithmetic number, because the mean of its divisors is an integer number (4770342).

Almost surely, 2^61552560 is an apocalyptic number.

61552560 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

61552560 is an abundant number, since it is smaller than the sum of its proper divisors (129261120).

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

61552560 is a wasteful number, since it uses less digits than its factorization.

61552560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 256485 (or 256479 counting only the distinct ones).

The product of its (nonzero) digits is 9000, while the sum is 30.

The square root of 61552560 is about 7845.5439581969. The cubic root of 61552560 is about 394.8347543594.

The spelling of 61552560 in words is "sixty-one million, five hundred fifty-two thousand, five hundred sixty".