53916390 has 72 divisors (see below), whose sum is σ = 154116144. Its totient is φ = 13068000.

The previous prime is 53916389. The next prime is 53916391. The reversal of 53916390 is 9361935.

It is an interprime number because it is at equal distance from previous prime (53916389) and next prime (53916391).

It is a super-2 number, since 2×53916390² = 5813954221264200, which contains 22 as substring.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53916391) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 8415 + ... + 13365.

It is an arithmetic number, because the mean of its divisors is an integer number (2140502).

Almost surely, 2^53916390 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 53916390, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (77058072).

53916390 is an abundant number, since it is smaller than the sum of its proper divisors (100199754).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

53916390 is a wasteful number, since it uses less digits than its factorization.

53916390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4986 (or 4972 counting only the distinct ones).

The product of its (nonzero) digits is 21870, while the sum is 36.

The square root of 53916390 is about 7342.7780846217. The cubic root of 53916390 is about 377.7811364241.

It can be divided in two parts, 5391 and 6390, that added together give a triangular number (11781 = T₁₅₃).

The spelling of 53916390 in words is "fifty-three million, nine hundred sixteen thousand, three hundred ninety".