53506890 has 24 divisors (see below), whose sum is σ = 139118148. Its totient is φ = 14268480.

The previous prime is 53506879. The next prime is 53506891. The reversal of 53506890 is 9860535.

It can be written as a sum of positive squares in 2 ways, for example, as 53450721 + 56169 = 7311^2 + 237^2 .

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

It is not an unprimeable number, because it can be changed into a prime (53506891) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 297171 + ... + 297350.

Almost surely, 2^53506890 is an apocalyptic number.

53506890 is an abundant number, since it is smaller than the sum of its proper divisors (85611258).

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

53506890 is a wasteful number, since it uses less digits than its factorization.

53506890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 594534 (or 594531 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 36.

The square root of 53506890 is about 7314.8403947045. The cubic root of 53506890 is about 376.8222771391.

The spelling of 53506890 in words is "fifty-three million, five hundred six thousand, eight hundred ninety".