87393542 has 4 divisors (see below), whose sum is σ = 131090316. Its totient is φ = 43696770.

The previous prime is 87393511. The next prime is 87393563. The reversal of 87393542 is 24539378.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24539378 = 2 ⋅12269689.

It is a self number, because there is not a number n which added to its sum of digits gives 87393542.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21848384 + ... + 21848387.

It is an arithmetic number, because the mean of its divisors is an integer number (32772579).

Almost surely, 2^87393542 is an apocalyptic number.

87393542 is a deficient number, since it is larger than the sum of its proper divisors (43696774).

87393542 is a wasteful number, since it uses less digits than its factorization.

87393542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43696773.

The product of its digits is 181440, while the sum is 41.

The square root of 87393542 is about 9348.4513155923. The cubic root of 87393542 is about 443.7718811666.

The spelling of 87393542 in words is "eighty-seven million, three hundred ninety-three thousand, five hundred forty-two".