55149118 has 4 divisors (see below), whose sum is σ = 82723680. Its totient is φ = 27574558.

The previous prime is 55149103. The next prime is 55149119. The reversal of 55149118 is 81194155.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55149119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13787278 + ... + 13787281.

It is an arithmetic number, because the mean of its divisors is an integer number (20680920).

Almost surely, 2^55149118 is an apocalyptic number.

55149118 is a deficient number, since it is larger than the sum of its proper divisors (27574562).

55149118 is a wasteful number, since it uses less digits than its factorization.

55149118 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27574561.

The product of its digits is 7200, while the sum is 34.

The square root of 55149118 is about 7426.2452154504. The cubic root of 55149118 is about 380.6386260348.

The spelling of 55149118 in words is "fifty-five million, one hundred forty-nine thousand, one hundred eighteen".