55953139 has 8 divisors (see below), whose sum is σ = 62689968. Its totient is φ = 49491360.

The previous prime is 55953133. The next prime is 55953179. The reversal of 55953139 is 93135955.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55953139 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55953133) 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, 68332 + ... + 69145.

It is an arithmetic number, because the mean of its divisors is an integer number (7836246).

Almost surely, 2^55953139 is an apocalyptic number.

55953139 is a deficient number, since it is larger than the sum of its proper divisors (6736829).

55953139 is a wasteful number, since it uses less digits than its factorization.

55953139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137525.

The product of its digits is 91125, while the sum is 40.

The square root of 55953139 is about 7480.1830859946. The cubic root of 55953139 is about 382.4794902640.

The spelling of 55953139 in words is "fifty-five million, nine hundred fifty-three thousand, one hundred thirty-nine".