157890547 has 2 divisors, whose sum is σ = 157890548. Its totient is φ = 157890546.

The previous prime is 157890521. The next prime is 157890553. The reversal of 157890547 is 745098751.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-157890547 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 157890497 and 157890506.

It is not a weakly prime, because it can be changed into another prime (157890847) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78945273 + 78945274.

It is an arithmetic number, because the mean of its divisors is an integer number (78945274).

Almost surely, 2^157890547 is an apocalyptic number.

157890547 is a deficient number, since it is larger than the sum of its proper divisors (1).

157890547 is an equidigital number, since it uses as much as digits as its factorization.

157890547 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 352800, while the sum is 46.

The square root of 157890547 is about 12565.4505291295. The cubic root of 157890547 is about 540.4871541237.

The spelling of 157890547 in words is "one hundred fifty-seven million, eight hundred ninety thousand, five hundred forty-seven".