85772122 has 4 divisors (see below), whose sum is σ = 128658186. Its totient is φ = 42886060.

The previous prime is 85772107. The next prime is 85772131. The reversal of 85772122 is 22127758.

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., 53860921 + 31911201 = 7339^2 + 5649^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21443029 + ... + 21443032.

Almost surely, 2^85772122 is an apocalyptic number.

85772122 is a deficient number, since it is larger than the sum of its proper divisors (42886064).

85772122 is a wasteful number, since it uses less digits than its factorization.

85772122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42886063.

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

The square root of 85772122 is about 9261.3239874221. The cubic root of 85772122 is about 441.0102852550.

The spelling of 85772122 in words is "eighty-five million, seven hundred seventy-two thousand, one hundred twenty-two".