55149659 has 4 divisors (see below), whose sum is σ = 56323104. Its totient is φ = 53976216.

The previous prime is 55149637. The next prime is 55149667. The reversal of 55149659 is 95694155.

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

It is a cyclic number.

It is not a de Polignac number, because 55149659 - 2²⁴ = 38372443 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55149629) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 586652 + ... + 586745.

It is an arithmetic number, because the mean of its divisors is an integer number (14080776).

Almost surely, 2^55149659 is an apocalyptic number.

55149659 is a deficient number, since it is larger than the sum of its proper divisors (1173445).

55149659 is a wasteful number, since it uses less digits than its factorization.

55149659 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1173444.

The product of its digits is 243000, while the sum is 44.

The square root of 55149659 is about 7426.2816402288. The cubic root of 55149659 is about 380.6398706895.

The spelling of 55149659 in words is "fifty-five million, one hundred forty-nine thousand, six hundred fifty-nine".