72290951 has 4 divisors (see below), whose sum is σ = 73281312. Its totient is φ = 71300592.

The previous prime is 72290947. The next prime is 72290957. The reversal of 72290951 is 15909227.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 15909227 = 61 ⋅260807.

It is a cyclic number.

It is not a de Polignac number, because 72290951 - 2² = 72290947 is a prime.

It is a super-3 number, since 3×72290951³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72290957) 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, 495071 + ... + 495216.

It is an arithmetic number, because the mean of its divisors is an integer number (18320328).

Almost surely, 2^72290951 is an apocalyptic number.

72290951 is a deficient number, since it is larger than the sum of its proper divisors (990361).

72290951 is an equidigital number, since it uses as much as digits as its factorization.

72290951 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 990360.

The product of its (nonzero) digits is 11340, while the sum is 35.

The square root of 72290951 is about 8502.4085411135. The cubic root of 72290951 is about 416.5763841369.

The spelling of 72290951 in words is "seventy-two million, two hundred ninety thousand, nine hundred fifty-one".