87552739 has 4 divisors (see below), whose sum is σ = 88327656. Its totient is φ = 86777824.

The previous prime is 87552733. The next prime is 87552757. The reversal of 87552739 is 93725578.

87552739 = T₁₃₀ + T₁₃₁ + ... + T₈₀₇.

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 87552739 - 2²³ = 79164131 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87552733) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 387289 + ... + 387514.

It is an arithmetic number, because the mean of its divisors is an integer number (22081914).

Almost surely, 2^87552739 is an apocalyptic number.

87552739 is a deficient number, since it is larger than the sum of its proper divisors (774917).

87552739 is a wasteful number, since it uses less digits than its factorization.

87552739 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 774916.

The product of its digits is 529200, while the sum is 46.

The square root of 87552739 is about 9356.9620604126. The cubic root of 87552739 is about 444.0411775651.

It can be divided in two parts, 87 and 552739, that added together give a triangular number (552826 = T₁₀₅₁).

The spelling of 87552739 in words is "eighty-seven million, five hundred fifty-two thousand, seven hundred thirty-nine".