61511456 has 12 divisors (see below), whose sum is σ = 121100742. Its totient is φ = 30755712.

The previous prime is 61511447. The next prime is 61511467. The reversal of 61511456 is 65411516.

It can be written as a sum of positive squares in only one way, i.e., 58675600 + 2835856 = 7660^2 + 1684^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 961085 + ... + 961148.

Almost surely, 2^61511456 is an apocalyptic number.

It is an amenable number.

61511456 is a deficient number, since it is larger than the sum of its proper divisors (59589286).

61511456 is a wasteful number, since it uses less digits than its factorization.

61511456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1922243 (or 1922235 counting only the distinct ones).

The product of its digits is 3600, while the sum is 29.

The square root of 61511456 is about 7842.9239445503. The cubic root of 61511456 is about 394.7468462818.

The spelling of 61511456 in words is "sixty-one million, five hundred eleven thousand, four hundred fifty-six".