157755493 has 8 divisors (see below), whose sum is σ = 180749312. Its totient is φ = 134876016.

The previous prime is 157755469. The next prime is 157755509. The reversal of 157755493 is 394557751.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 157755493 - 2²⁵ = 124201061 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157755193) 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 in 7 ways as a sum of consecutive naturals, for example, 25605 + ... + 31162.

It is an arithmetic number, because the mean of its divisors is an integer number (22593664).

Almost surely, 2^157755493 is an apocalyptic number.

It is an amenable number.

157755493 is a deficient number, since it is larger than the sum of its proper divisors (22993819).

157755493 is an equidigital number, since it uses as much as digits as its factorization.

157755493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57171.

The product of its digits is 661500, while the sum is 46.

The square root of 157755493 is about 12560.0753580542. The cubic root of 157755493 is about 540.3330056205. Note that the first 3 decimals are identical.

The spelling of 157755493 in words is "one hundred fifty-seven million, seven hundred fifty-five thousand, four hundred ninety-three".