61569152 has 16 divisors (see below), whose sum is σ = 122657550. Its totient is φ = 30784512.

The previous prime is 61569113. The next prime is 61569161. The reversal of 61569152 is 25196516.

It can be written as a sum of positive squares in only one way, i.e., 49900096 + 11669056 = 7064^2 + 3416^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 240377 + ... + 240632.

Almost surely, 2^61569152 is an apocalyptic number.

It is an amenable number.

61569152 is a deficient number, since it is larger than the sum of its proper divisors (61088398).

61569152 is an equidigital number, since it uses as much as digits as its factorization.

61569152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 481023 (or 481011 counting only the distinct ones).

The product of its digits is 16200, while the sum is 35.

The square root of 61569152 is about 7846.6013024748. The cubic root of 61569152 is about 394.8702281598.

The spelling of 61569152 in words is "sixty-one million, five hundred sixty-nine thousand, one hundred fifty-two".