72422901 has 6 divisors (see below), whose sum is σ = 104610870. Its totient is φ = 48281928.

The previous prime is 72422899. The next prime is 72422939. The reversal of 72422901 is 10922427.

It can be written as a sum of positive squares in only one way, i.e., 57608100 + 14814801 = 7590^2 + 3849^2 .

It is not a de Polignac number, because 72422901 - 2¹ = 72422899 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72422951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4023486 + ... + 4023503.

It is an arithmetic number, because the mean of its divisors is an integer number (17435145).

Almost surely, 2^72422901 is an apocalyptic number.

It is an amenable number.

72422901 is a deficient number, since it is larger than the sum of its proper divisors (32187969).

72422901 is a wasteful number, since it uses less digits than its factorization.

72422901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8046995 (or 8046992 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 72422901 is about 8510.1645695016. The cubic root of 72422901 is about 416.8296839104.

The spelling of 72422901 in words is "seventy-two million, four hundred twenty-two thousand, nine hundred one".