2547397953 has 6 divisors (see below), whose sum is σ = 3679574834. Its totient is φ = 1698265296.

The previous prime is 2547397943. The next prime is 2547397967. The reversal of 2547397953 is 3597937452.

2547397953 is a `hidden beast` number, since 2 + 547 + 3 + 9 + 7 + 95 + 3 = 666.

2547397953 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 1503267984 + 1044129969 = 38772^2 + 32313^2 .

It is not a de Polignac number, because 2547397953 - 2⁶ = 2547397889 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2547397953.

It is not an unprimeable number, because it can be changed into a prime (2547397933) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 141522100 + ... + 141522117.

Almost surely, 2^2547397953 is an apocalyptic number.

It is an amenable number.

2547397953 is a deficient number, since it is larger than the sum of its proper divisors (1132176881).

2547397953 is a wasteful number, since it uses less digits than its factorization.

2547397953 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 283044223 (or 283044220 counting only the distinct ones).

The product of its digits is 7144200, while the sum is 54.

The square root of 2547397953 is about 50471.7540115261. The cubic root of 2547397953 is about 1365.7323558658.

The spelling of 2547397953 in words is "two billion, five hundred forty-seven million, three hundred ninety-seven thousand, nine hundred fifty-three".