87400053 has 48 divisors (see below), whose sum is σ = 143299520. Its totient is φ = 52907904.

The previous prime is 87400051. The next prime is 87400073. The reversal of 87400053 is 35000478.

It is not a de Polignac number, because 87400053 - 2¹ = 87400051 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87400051) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 230418 + ... + 230796.

Almost surely, 2^87400053 is an apocalyptic number.

87400053 is the 5913-rd heptagonal number.

It is an amenable number.

87400053 is a deficient number, since it is larger than the sum of its proper divisors (55899467).

87400053 is a wasteful number, since it uses less digits than its factorization.

87400053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 480 (or 468 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

The square root of 87400053 is about 9348.7995486052. The cubic root of 87400053 is about 443.7829015346.

The spelling of 87400053 in words is "eighty-seven million, four hundred thousand, fifty-three".