72555463 has 4 divisors (see below), whose sum is σ = 73924488. Its totient is φ = 71186440.

The previous prime is 72555449. The next prime is 72555493. The reversal of 72555463 is 36455527.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 36455527 = 4397 ⋅8291.

It is a cyclic number.

It is not a de Polignac number, because 72555463 - 2¹³ = 72547271 is a prime.

It is a super-2 number, since 2×72555463² = 10528590422288738, which contains 22 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 (72555443) 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, 684433 + ... + 684538.

It is an arithmetic number, because the mean of its divisors is an integer number (18481122).

Almost surely, 2^72555463 is an apocalyptic number.

72555463 is a deficient number, since it is larger than the sum of its proper divisors (1369025).

72555463 is a wasteful number, since it uses less digits than its factorization.

72555463 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1369024.

The product of its digits is 126000, while the sum is 37.

The square root of 72555463 is about 8517.9494598172. The cubic root of 72555463 is about 417.0838488999.

The spelling of 72555463 in words is "seventy-two million, five hundred fifty-five thousand, four hundred sixty-three".