47197457 has 12 divisors (see below), whose sum is σ = 50452380. Its totient is φ = 44142336.

The previous prime is 47197439. The next prime is 47197477. The reversal of 47197457 is 75479174.

It can be written as a sum of positive squares in 6 ways, for example, as 17505856 + 29691601 = 4184^2 + 5449^2 .

It is not a de Polignac number, because 47197457 - 2⁶ = 47197393 is a prime.

It is a hoax number, since the sum of its digits (44) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47197477) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 56519 + ... + 57347.

It is an arithmetic number, because the mean of its divisors is an integer number (4204365).

Almost surely, 2^47197457 is an apocalyptic number.

It is an amenable number.

47197457 is a deficient number, since it is larger than the sum of its proper divisors (3254923).

47197457 is a wasteful number, since it uses less digits than its factorization.

47197457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1060 (or 1043 counting only the distinct ones).

The product of its digits is 246960, while the sum is 44.

The square root of 47197457 is about 6870.0405384539. The cubic root of 47197457 is about 361.3872834626.

The spelling of 47197457 in words is "forty-seven million, one hundred ninety-seven thousand, four hundred fifty-seven".