87022550 has 12 divisors (see below), whose sum is σ = 161862036. Its totient is φ = 34809000.

The previous prime is 87022511. The next prime is 87022553. The reversal of 87022550 is 5522078.

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87022553) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 870176 + ... + 870275.

It is an arithmetic number, because the mean of its divisors is an integer number (13488503).

Almost surely, 2^87022550 is an apocalyptic number.

87022550 is a deficient number, since it is larger than the sum of its proper divisors (74839486).

87022550 is a wasteful number, since it uses less digits than its factorization.

87022550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1740463 (or 1740458 counting only the distinct ones).

The product of its (nonzero) digits is 5600, while the sum is 29.

The square root of 87022550 is about 9328.5877816527. The cubic root of 87022550 is about 443.1430424346.

The spelling of 87022550 in words is "eighty-seven million, twenty-two thousand, five hundred fifty".