72953471 has 4 divisors (see below), whose sum is σ = 73222944. Its totient is φ = 72684000.

The previous prime is 72953437. The next prime is 72953479. The reversal of 72953471 is 17435927.

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

It is a cyclic number.

It is not a de Polignac number, because 72953471 - 2¹⁴ = 72937087 is a prime.

It is a super-3 number, since 3×72953471³ (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 (72953479) 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, 134330 + ... + 134871.

It is an arithmetic number, because the mean of its divisors is an integer number (18305736).

Almost surely, 2^72953471 is an apocalyptic number.

72953471 is a deficient number, since it is larger than the sum of its proper divisors (269473).

72953471 is a wasteful number, since it uses less digits than its factorization.

72953471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 269472.

The product of its digits is 52920, while the sum is 38.

The square root of 72953471 is about 8541.2804075267. The cubic root of 72953471 is about 417.8451060293.

The spelling of 72953471 in words is "seventy-two million, nine hundred fifty-three thousand, four hundred seventy-one".