157861453 has 2 divisors, whose sum is σ = 157861454. Its totient is φ = 157861452.

The previous prime is 157861441. The next prime is 157861511. The reversal of 157861453 is 354168751.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 114854089 + 43007364 = 10717^2 + 6558^2 .

It is a cyclic number.

It is not a de Polignac number, because 157861453 - 2⁵ = 157861421 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (157861153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78930726 + 78930727.

It is an arithmetic number, because the mean of its divisors is an integer number (78930727).

Almost surely, 2^157861453 is an apocalyptic number.

It is an amenable number.

157861453 is a deficient number, since it is larger than the sum of its proper divisors (1).

157861453 is an equidigital number, since it uses as much as digits as its factorization.

157861453 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 100800, while the sum is 40.

The square root of 157861453 is about 12564.2927775502. The cubic root of 157861453 is about 540.4539541221.

The spelling of 157861453 in words is "one hundred fifty-seven million, eight hundred sixty-one thousand, four hundred fifty-three".