157366553 has 2 divisors, whose sum is σ = 157366554. Its totient is φ = 157366552.

The previous prime is 157366549. The next prime is 157366591. The reversal of 157366553 is 355663751.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 105411289 + 51955264 = 10267^2 + 7208^2 .

It is a cyclic number.

It is not a de Polignac number, because 157366553 - 2² = 157366549 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 157366553.

It is not a weakly prime, because it can be changed into another prime (157366523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78683276 + 78683277.

It is an arithmetic number, because the mean of its divisors is an integer number (78683277).

Almost surely, 2^157366553 is an apocalyptic number.

It is an amenable number.

157366553 is a deficient number, since it is larger than the sum of its proper divisors (1).

157366553 is an equidigital number, since it uses as much as digits as its factorization.

157366553 is an evil number, because the sum of its binary digits is even.

The product of its digits is 283500, while the sum is 41.

The square root of 157366553 is about 12544.5826156154. The cubic root of 157366553 is about 539.8885835520. Note that the first 3 decimals are identical.

The spelling of 157366553 in words is "one hundred fifty-seven million, three hundred sixty-six thousand, five hundred fifty-three".