6474252157 has 4 divisors (see below), whose sum is σ = 6485473276. Its totient is φ = 6463031040.

The previous prime is 6474252139. The next prime is 6474252163. The reversal of 6474252157 is 7512524746.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5975444601 + 498807556 = 77301^2 + 22334^2 .

It is a cyclic number.

It is not a de Polignac number, because 6474252157 - 2²⁷ = 6340034429 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6474252107) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5609694 + ... + 5610847.

It is an arithmetic number, because the mean of its divisors is an integer number (1621368319).

Almost surely, 2^6474252157 is an apocalyptic number.

It is an amenable number.

6474252157 is a deficient number, since it is larger than the sum of its proper divisors (11221119).

6474252157 is a wasteful number, since it uses less digits than its factorization.

6474252157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11221118.

The product of its digits is 470400, while the sum is 43.

The square root of 6474252157 is about 80462.7376926736. The cubic root of 6474252157 is about 1863.7881095025.

The spelling of 6474252157 in words is "six billion, four hundred seventy-four million, two hundred fifty-two thousand, one hundred fifty-seven".