156291053 has 2 divisors, whose sum is σ = 156291054. Its totient is φ = 156291052.

The previous prime is 156291043. The next prime is 156291077. The reversal of 156291053 is 350192651.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 140114569 + 16176484 = 11837^2 + 4022^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-156291053 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (156291043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78145526 + 78145527.

It is an arithmetic number, because the mean of its divisors is an integer number (78145527).

Almost surely, 2^156291053 is an apocalyptic number.

It is an amenable number.

156291053 is a deficient number, since it is larger than the sum of its proper divisors (1).

156291053 is an equidigital number, since it uses as much as digits as its factorization.

156291053 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8100, while the sum is 32.

The square root of 156291053 is about 12501.6420121518. The cubic root of 156291053 is about 538.6558395812.

The spelling of 156291053 in words is "one hundred fifty-six million, two hundred ninety-one thousand, fifty-three".