55742774 has 16 divisors (see below), whose sum is σ = 86593536. Its totient is φ = 26884200.

The previous prime is 55742773. The next prime is 55742783. The reversal of 55742774 is 47724755.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55742773) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20219 + ... + 22809.

It is an arithmetic number, because the mean of its divisors is an integer number (5412096).

Almost surely, 2^55742774 is an apocalyptic number.

55742774 is a deficient number, since it is larger than the sum of its proper divisors (30850762).

55742774 is a wasteful number, since it uses less digits than its factorization.

55742774 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2971.

The product of its digits is 274400, while the sum is 41.

The square root of 55742774 is about 7466.1083571028. The cubic root of 55742774 is about 381.9995568464. Note that the first 3 decimals are identical.

The spelling of 55742774 in words is "fifty-five million, seven hundred forty-two thousand, seven hundred seventy-four".