47722545 has 72 divisors (see below), whose sum is σ = 93210936. Its totient is φ = 22450176.

The previous prime is 47722541. The next prime is 47722567. The reversal of 47722545 is 54522774.

It is a happy number.

47722545 is a `hidden beast` number, since 47 + 72 + 2 + 545 = 666.

It can be written as a sum of positive squares in 12 ways, for example, as 17943696 + 29778849 = 4236^2 + 5457^2 .

It is not a de Polignac number, because 47722545 - 2² = 47722541 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47722541) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 491937 + ... + 492033.

Almost surely, 2^47722545 is an apocalyptic number.

47722545 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

47722545 is a deficient number, since it is larger than the sum of its proper divisors (45488391).

47722545 is a wasteful number, since it uses less digits than its factorization.

47722545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179 (or 147 counting only the distinct ones).

The product of its digits is 78400, while the sum is 36.

The square root of 47722545 is about 6908.1506208247. The cubic root of 47722545 is about 362.7225300329.

The spelling of 47722545 in words is "forty-seven million, seven hundred twenty-two thousand, five hundred forty-five".