53118690 has 32 divisors (see below), whose sum is σ = 127707840. Its totient is φ = 14140224.

The previous prime is 53118683. The next prime is 53118697. The reversal of 53118690 is 9681135.

It is an interprime number because it is at equal distance from previous prime (53118683) and next prime (53118697).

It is a super-2 number, since 2×53118690² = 5643190454632200, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (53118697) 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, 21541 + ... + 23879.

It is an arithmetic number, because the mean of its divisors is an integer number (3990870).

Almost surely, 2^53118690 is an apocalyptic number.

53118690 is an abundant number, since it is smaller than the sum of its proper divisors (74589150).

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

53118690 is a wasteful number, since it uses less digits than its factorization.

53118690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3106.

The product of its (nonzero) digits is 6480, while the sum is 33.

The square root of 53118690 is about 7288.2569932735. The cubic root of 53118690 is about 375.9087648338.

The spelling of 53118690 in words is "fifty-three million, one hundred eighteen thousand, six hundred ninety".