51553946 has 8 divisors (see below), whose sum is σ = 77606964. Its totient is φ = 25684960.

The previous prime is 51553937. The next prime is 51553963. The reversal of 51553946 is 64935515.

It can be written as a sum of positive squares in 2 ways, for example, as 43494025 + 8059921 = 6595^2 + 2839^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45305 + ... + 46428.

Almost surely, 2^51553946 is an apocalyptic number.

51553946 is a deficient number, since it is larger than the sum of its proper divisors (26053018).

51553946 is a wasteful number, since it uses less digits than its factorization.

51553946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92016.

The product of its digits is 81000, while the sum is 38.

The square root of 51553946 is about 7180.1076593600. The cubic root of 51553946 is about 372.1808048898.

The spelling of 51553946 in words is "fifty-one million, five hundred fifty-three thousand, nine hundred forty-six".