87437951 has 2 divisors, whose sum is σ = 87437952. Its totient is φ = 87437950.

The previous prime is 87437899. The next prime is 87437971. The reversal of 87437951 is 15973478.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 87437951 - 2¹⁰ = 87436927 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87437971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43718975 + 43718976.

It is an arithmetic number, because the mean of its divisors is an integer number (43718976).

Almost surely, 2^87437951 is an apocalyptic number.

87437951 is a deficient number, since it is larger than the sum of its proper divisors (1).

87437951 is an equidigital number, since it uses as much as digits as its factorization.

87437951 is an evil number, because the sum of its binary digits is even.

The product of its digits is 211680, while the sum is 44.

The square root of 87437951 is about 9350.8262201797. The cubic root of 87437951 is about 443.8470359505.

It can be divided in two parts, 87437 and 951, that added together give a palindrome (88388).

The spelling of 87437951 in words is "eighty-seven million, four hundred thirty-seven thousand, nine hundred fifty-one".