157554491 has 2 divisors, whose sum is σ = 157554492. Its totient is φ = 157554490.

The previous prime is 157554461. The next prime is 157554503. The reversal of 157554491 is 194455751.

It is a happy number.

157554491 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 157554491 - 2⁶ = 157554427 is a prime.

It is not a weakly prime, because it can be changed into another prime (157554401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78777245 + 78777246.

It is an arithmetic number, because the mean of its divisors is an integer number (78777246).

Almost surely, 2^157554491 is an apocalyptic number.

157554491 is a deficient number, since it is larger than the sum of its proper divisors (1).

157554491 is an equidigital number, since it uses as much as digits as its factorization.

157554491 is an evil number, because the sum of its binary digits is even.

The product of its digits is 126000, while the sum is 41.

The square root of 157554491 is about 12552.0711836732. The cubic root of 157554491 is about 540.1034221207.

The spelling of 157554491 in words is "one hundred fifty-seven million, five hundred fifty-four thousand, four hundred ninety-one".