87751423 has 4 divisors (see below), whose sum is σ = 87775488. Its totient is φ = 87727360.

The previous prime is 87751403. The next prime is 87751453. The reversal of 87751423 is 32415778.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32415778 = 2 ⋅16207889.

It is a cyclic number.

It is not a de Polignac number, because 87751423 - 2²⁵ = 54196991 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87751403) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5311 + ... + 14272.

It is an arithmetic number, because the mean of its divisors is an integer number (21943872).

Almost surely, 2^87751423 is an apocalyptic number.

87751423 is a deficient number, since it is larger than the sum of its proper divisors (24065).

87751423 is a wasteful number, since it uses less digits than its factorization.

87751423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24064.

The product of its digits is 47040, while the sum is 37.

The square root of 87751423 is about 9367.5729514106. The cubic root of 87751423 is about 444.3768123176.

The spelling of 87751423 in words is "eighty-seven million, seven hundred fifty-one thousand, four hundred twenty-three".