55191746 has 4 divisors (see below), whose sum is σ = 82787622. Its totient is φ = 27595872.

The previous prime is 55191737. The next prime is 55191761. The reversal of 55191746 is 64719155.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 51912025 + 3279721 = 7205^2 + 1811^2 .

It is a super-2 number, since 2×55191746² = 6092257653057032, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13797935 + ... + 13797938.

Almost surely, 2^55191746 is an apocalyptic number.

55191746 is a deficient number, since it is larger than the sum of its proper divisors (27595876).

55191746 is a wasteful number, since it uses less digits than its factorization.

55191746 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27595875.

The product of its digits is 37800, while the sum is 38.

The square root of 55191746 is about 7429.1147521088. The cubic root of 55191746 is about 380.7366734445.

The spelling of 55191746 in words is "fifty-five million, one hundred ninety-one thousand, seven hundred forty-six".