87752122 has 4 divisors (see below), whose sum is σ = 131628186. Its totient is φ = 43876060.

The previous prime is 87752101. The next prime is 87752129. The reversal of 87752122 is 22125778.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 65464281 + 22287841 = 8091^2 + 4721^2 .

It is not an unprimeable number, because it can be changed into a prime (87752129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21938029 + ... + 21938032.

Almost surely, 2^87752122 is an apocalyptic number.

87752122 is a deficient number, since it is larger than the sum of its proper divisors (43876064).

87752122 is a wasteful number, since it uses less digits than its factorization.

87752122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43876063.

The product of its digits is 15680, while the sum is 34.

The square root of 87752122 is about 9367.6102608937. The cubic root of 87752122 is about 444.3779922360.

The spelling of 87752122 in words is "eighty-seven million, seven hundred fifty-two thousand, one hundred twenty-two".