47022745 has 32 divisors (see below), whose sum is σ = 72274176. Its totient is φ = 28512000.

The previous prime is 47022719. The next prime is 47022749. The reversal of 47022745 is 54722074.

It is not a de Polignac number, because 47022745 - 2¹⁷ = 46891673 is a prime.

It is a super-2 number, since 2×47022745² = 4422277094670050, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47022749) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12595 + ... + 15895.

It is an arithmetic number, because the mean of its divisors is an integer number (2258568).

Almost surely, 2^47022745 is an apocalyptic number.

It is an amenable number.

47022745 is a deficient number, since it is larger than the sum of its proper divisors (25251431).

47022745 is a wasteful number, since it uses less digits than its factorization.

47022745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3361.

The product of its (nonzero) digits is 15680, while the sum is 31.

The square root of 47022745 is about 6857.3132493711. The cubic root of 47022745 is about 360.9408133414.

It can be divided in two parts, 4702 and 2745, that added together give a palindrome (7447).

The spelling of 47022745 in words is "forty-seven million, twenty-two thousand, seven hundred forty-five".