56661354 has 12 divisors (see below), whose sum is σ = 122766306. Its totient is φ = 18887112.

The previous prime is 56661343. The next prime is 56661373. The reversal of 56661354 is 45316665.

It can be written as a sum of positive squares in only one way, i.e., 56655729 + 5625 = 7527^2 + 75^2 .

It is a super-2 number, since 2×56661354² = 6421018074226632, which contains 22 as substring.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1573909 + ... + 1573944.

Almost surely, 2^56661354 is an apocalyptic number.

56661354 is an abundant number, since it is smaller than the sum of its proper divisors (66104952).

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

56661354 is a wasteful number, since it uses less digits than its factorization.

56661354 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3147861 (or 3147858 counting only the distinct ones).

The product of its digits is 64800, while the sum is 36.

The square root of 56661354 is about 7527.3736455686. The cubic root of 56661354 is about 384.0864470087.

The spelling of 56661354 in words is "fifty-six million, six hundred sixty-one thousand, three hundred fifty-four".