55149730 has 16 divisors (see below), whose sum is σ = 99929664. Its totient is φ = 21913200.

The previous prime is 55149727. The next prime is 55149767. The reversal of 55149730 is 3794155.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16752 + ... + 19771.

It is an arithmetic number, because the mean of its divisors is an integer number (6245604).

Almost surely, 2^55149730 is an apocalyptic number.

55149730 is a deficient number, since it is larger than the sum of its proper divisors (44779934).

55149730 is a wasteful number, since it uses less digits than its factorization.

55149730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36681.

The product of its (nonzero) digits is 18900, while the sum is 34.

The square root of 55149730 is about 7426.2864205469. The cubic root of 55149730 is about 380.6400340354.

The spelling of 55149730 in words is "fifty-five million, one hundred forty-nine thousand, seven hundred thirty".