61620552 has 48 divisors (see below), whose sum is σ = 190731840. Its totient is φ = 17605728.

The previous prime is 61620547. The next prime is 61620593. The reversal of 61620552 is 25502616.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 60628 + ... + 61635.

It is an arithmetic number, because the mean of its divisors is an integer number (3973580).

Almost surely, 2^61620552 is an apocalyptic number.

It is an amenable number.

61620552 is an abundant number, since it is smaller than the sum of its proper divisors (129111288).

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

61620552 is a wasteful number, since it uses less digits than its factorization.

61620552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122282 (or 122275 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 61620552 is about 7849.8759225863. The cubic root of 61620552 is about 394.9800812473.

The spelling of 61620552 in words is "sixty-one million, six hundred twenty thousand, five hundred fifty-two".