53887554 has 72 divisors (see below), whose sum is σ = 137328048. Its totient is φ = 15225840.

The previous prime is 53887549. The next prime is 53887567. The reversal of 53887554 is 45578835.

It is a super-2 number, since 2×53887554² = 5807736952205832, which contains 22 as substring.

Its product of digits (672000) is a multiple of the sum of its prime factors (700).

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 94089 + ... + 94659.

It is an arithmetic number, because the mean of its divisors is an integer number (1907334).

Almost surely, 2^53887554 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 53887554, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (68664024).

53887554 is an abundant number, since it is smaller than the sum of its proper divisors (83440494).

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

53887554 is a wasteful number, since it uses less digits than its factorization.

53887554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 700 (or 690 counting only the distinct ones).

The product of its digits is 672000, while the sum is 45.

The square root of 53887554 is about 7340.8142600123. The cubic root of 53887554 is about 377.7137750922.

The spelling of 53887554 in words is "fifty-three million, eight hundred eighty-seven thousand, five hundred fifty-four".