72202501 has 4 divisors (see below), whose sum is σ = 82517152. Its totient is φ = 61887852.

The previous prime is 72202469. The next prime is 72202513. The reversal of 72202501 is 10520227.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 72202501 - 2⁵ = 72202469 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72202531) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5157315 + ... + 5157328.

It is an arithmetic number, because the mean of its divisors is an integer number (20629288).

Almost surely, 2^72202501 is an apocalyptic number.

It is an amenable number.

72202501 is a deficient number, since it is larger than the sum of its proper divisors (10314651).

72202501 is a wasteful number, since it uses less digits than its factorization.

72202501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10314650.

The product of its (nonzero) digits is 280, while the sum is 19.

The square root of 72202501 is about 8497.2054818040. The cubic root of 72202501 is about 416.4064171801.

Adding to 72202501 its reverse (10520227), we get a palindrome (82722728).

The spelling of 72202501 in words is "seventy-two million, two hundred two thousand, five hundred one".