45571972 has 6 divisors (see below), whose sum is σ = 79750958. Its totient is φ = 22785984.

The previous prime is 45571969. The next prime is 45571973. The reversal of 45571972 is 27917554.

It can be written as a sum of positive squares in only one way, i.e., 31539456 + 14032516 = 5616^2 + 3746^2 .

It is not an unprimeable number, because it can be changed into a prime (45571973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5696493 + ... + 5696500.

Almost surely, 2^45571972 is an apocalyptic number.

It is an amenable number.

45571972 is a deficient number, since it is larger than the sum of its proper divisors (34178986).

45571972 is a wasteful number, since it uses less digits than its factorization.

45571972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11392997 (or 11392995 counting only the distinct ones).

The product of its digits is 88200, while the sum is 40.

The square root of 45571972 is about 6750.7015931679. The cubic root of 45571972 is about 357.1899853693.

It can be divided in two parts, 455 and 71972, that added together give a palindrome (72427).

The spelling of 45571972 in words is "forty-five million, five hundred seventy-one thousand, nine hundred seventy-two".