55402015 has 8 divisors (see below), whose sum is σ = 66603888. Its totient is φ = 44240640.

The previous prime is 55402007. The next prime is 55402019. The reversal of 55402015 is 51020455.

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

It is not a de Polignac number, because 55402015 - 2³ = 55402007 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55402019) 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, 7026 + ... + 12655.

It is an arithmetic number, because the mean of its divisors is an integer number (8325486).

Almost surely, 2^55402015 is an apocalyptic number.

55402015 is a deficient number, since it is larger than the sum of its proper divisors (11201873).

55402015 is a wasteful number, since it uses less digits than its factorization.

55402015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20249.

The product of its (nonzero) digits is 1000, while the sum is 22.

The square root of 55402015 is about 7443.2529850866. The cubic root of 55402015 is about 381.2195697292.

The spelling of 55402015 in words is "fifty-five million, four hundred two thousand, fifteen".