87007557 has 32 divisors (see below), whose sum is σ = 144426240. Its totient is φ = 45365760.

The previous prime is 87007549. The next prime is 87007579. The reversal of 87007557 is 75570078.

It is not a de Polignac number, because 87007557 - 2³ = 87007549 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87007357) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 22507 + ... + 26087.

It is an arithmetic number, because the mean of its divisors is an integer number (4513320).

Almost surely, 2^87007557 is an apocalyptic number.

It is an amenable number.

87007557 is a deficient number, since it is larger than the sum of its proper divisors (57418683).

87007557 is a wasteful number, since it uses less digits than its factorization.

87007557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3693.

The product of its (nonzero) digits is 68600, while the sum is 39.

The square root of 87007557 is about 9327.7841420136. The cubic root of 87007557 is about 443.1175914634.

The spelling of 87007557 in words is "eighty-seven million, seven thousand, five hundred fifty-seven".