87757951 has 2 divisors, whose sum is σ = 87757952. Its totient is φ = 87757950.

The previous prime is 87757921. The next prime is 87758003. The reversal of 87757951 is 15975778.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 87757951 - 2¹³ = 87749759 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 87757895 and 87757904.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87757921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43878975 + 43878976.

It is an arithmetic number, because the mean of its divisors is an integer number (43878976).

Almost surely, 2^87757951 is an apocalyptic number.

87757951 is a deficient number, since it is larger than the sum of its proper divisors (1).

87757951 is an equidigital number, since it uses as much as digits as its factorization.

87757951 is an evil number, because the sum of its binary digits is even.

The product of its digits is 617400, while the sum is 49.

The square root of 87757951 is about 9367.9213809681. The cubic root of 87757951 is about 444.3878313978.

The spelling of 87757951 in words is "eighty-seven million, seven hundred fifty-seven thousand, nine hundred fifty-one".