71920453 has 8 divisors (see below), whose sum is σ = 82588320. Its totient is φ = 61940880.

The previous prime is 71920447. The next prime is 71920463. The reversal of 71920453 is 35402917.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 71920453 - 2¹⁷ = 71789381 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 (71920423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 171850 + ... + 172267.

It is an arithmetic number, because the mean of its divisors is an integer number (10323540).

Almost surely, 2^71920453 is an apocalyptic number.

It is an amenable number.

71920453 is a deficient number, since it is larger than the sum of its proper divisors (10667867).

71920453 is a wasteful number, since it uses less digits than its factorization.

71920453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 344147.

The product of its (nonzero) digits is 7560, while the sum is 31.

The square root of 71920453 is about 8480.5927269266. The cubic root of 71920453 is about 415.8635003498.

The spelling of 71920453 in words is "seventy-one million, nine hundred twenty thousand, four hundred fifty-three".