87157701 has 20 divisors (see below), whose sum is σ = 131552652. Its totient is φ = 57500928.

The previous prime is 87157663. The next prime is 87157703. The reversal of 87157701 is 10775178.

87157701 is a `hidden beast` number, since 87 + 1 + 577 + 0 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 57017601 + 30140100 = 7551^2 + 5490^2 .

It is not a de Polignac number, because 87157701 - 2¹⁷ = 87026629 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87157703) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 2311 + ... + 13403.

Almost surely, 2^87157701 is an apocalyptic number.

87157701 is a gapful number since it is divisible by the number (81) formed by its first and last digit.

It is an amenable number.

87157701 is a deficient number, since it is larger than the sum of its proper divisors (44394951).

87157701 is a wasteful number, since it uses less digits than its factorization.

87157701 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11202 (or 11193 counting only the distinct ones).

The product of its (nonzero) digits is 13720, while the sum is 36.

The square root of 87157701 is about 9335.8288866067. The cubic root of 87157701 is about 443.3723326098.

The spelling of 87157701 in words is "eighty-seven million, one hundred fifty-seven thousand, seven hundred one".