53402185 has 8 divisors (see below), whose sum is σ = 67852296. Its totient is φ = 40208640.

The previous prime is 53402177. The next prime is 53402191. The reversal of 53402185 is 58120435.

It can be written as a sum of positive squares in 4 ways, for example, as 2322576 + 51079609 = 1524^2 + 7147^2 .

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

It is not a de Polignac number, because 53402185 - 2³ = 53402177 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 314046 + ... + 314215.

It is an arithmetic number, because the mean of its divisors is an integer number (8481537).

Almost surely, 2^53402185 is an apocalyptic number.

It is an amenable number.

53402185 is a deficient number, since it is larger than the sum of its proper divisors (14450111).

53402185 is a wasteful number, since it uses less digits than its factorization.

53402185 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 628283.

The product of its (nonzero) digits is 4800, while the sum is 28.

The square root of 53402185 is about 7307.6798643619. The cubic root of 53402185 is about 376.5763216462.

The spelling of 53402185 in words is "fifty-three million, four hundred two thousand, one hundred eighty-five".