5651658157 has 4 divisors (see below), whose sum is σ = 5660056540. Its totient is φ = 5643259776.

The previous prime is 5651658121. The next prime is 5651658191. The reversal of 5651658157 is 7518561565.

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 1681902121 + 3969756036 = 41011^2 + 63006^2 .

It is a cyclic number.

It is not a de Polignac number, because 5651658157 - 2²⁷ = 5517440429 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 5651658157.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5651658107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4198182 + ... + 4199527.

It is an arithmetic number, because the mean of its divisors is an integer number (1415014135).

Almost surely, 2^5651658157 is an apocalyptic number.

It is an amenable number.

5651658157 is a deficient number, since it is larger than the sum of its proper divisors (8398383).

5651658157 is an equidigital number, since it uses as much as digits as its factorization.

5651658157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8398382.

The product of its digits is 1260000, while the sum is 49.

The square root of 5651658157 is about 75177.5109790155. The cubic root of 5651658157 is about 1781.2517136300.

The spelling of 5651658157 in words is "five billion, six hundred fifty-one million, six hundred fifty-eight thousand, one hundred fifty-seven".