87137951 has 4 divisors (see below), whose sum is σ = 88566504. Its totient is φ = 85709400.

The previous prime is 87137929. The next prime is 87137957. The reversal of 87137951 is 15973178.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 87137951 - 2⁶ = 87137887 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 87137899 and 87137908.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87137957) 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, 714185 + ... + 714306.

It is an arithmetic number, because the mean of its divisors is an integer number (22141626).

Almost surely, 2^87137951 is an apocalyptic number.

87137951 is a deficient number, since it is larger than the sum of its proper divisors (1428553).

87137951 is a wasteful number, since it uses less digits than its factorization.

87137951 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1428552.

The product of its digits is 52920, while the sum is 41.

The square root of 87137951 is about 9334.7710737864. The cubic root of 87137951 is about 443.3388405796.

It can be divided in two parts, 87137 and 951, that added together give a palindrome (88088).

The spelling of 87137951 in words is "eighty-seven million, one hundred thirty-seven thousand, nine hundred fifty-one".