55149242 has 16 divisors (see below), whose sum is σ = 86261760. Its totient is φ = 26410608.

The previous prime is 55149209. The next prime is 55149251. The reversal of 55149242 is 24294155.

It is a junction number, because it is equal to n+sod(n) for n = 55149199 and 55149208.

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, 3623 + ... + 11109.

It is an arithmetic number, because the mean of its divisors is an integer number (5391360).

Almost surely, 2^55149242 is an apocalyptic number.

55149242 is a deficient number, since it is larger than the sum of its proper divisors (31112518).

55149242 is a wasteful number, since it uses less digits than its factorization.

55149242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7645.

The product of its digits is 14400, while the sum is 32.

The square root of 55149242 is about 7426.2535642139. The cubic root of 55149242 is about 380.6389113168.

The spelling of 55149242 in words is "fifty-five million, one hundred forty-nine thousand, two hundred forty-two".