55402165 has 16 divisors (see below), whose sum is σ = 81825408. Its totient is φ = 35067456.

The previous prime is 55402163. The next prime is 55402169. The reversal of 55402165 is 56120455.

55402165 = T₁₂₇₃ + T₁₂₇₄ + ... + T₁₃₃₇.

It is a cyclic number.

It is not a de Polignac number, because 55402165 - 2¹ = 55402163 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55402163) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 60427 + ... + 61336.

It is an arithmetic number, because the mean of its divisors is an integer number (5114088).

Almost surely, 2^55402165 is an apocalyptic number.

It is an amenable number.

55402165 is a deficient number, since it is larger than the sum of its proper divisors (26423243).

55402165 is a wasteful number, since it uses less digits than its factorization.

55402165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121788.

The product of its (nonzero) digits is 6000, while the sum is 28.

The square root of 55402165 is about 7443.2630613193. The cubic root of 55402165 is about 381.2199137774.

The spelling of 55402165 in words is "fifty-five million, four hundred two thousand, one hundred sixty-five".