157744081 has 8 divisors (see below), whose sum is σ = 176086944. Its totient is φ = 140068320.

The previous prime is 157744057. The next prime is 157744091. The reversal of 157744081 is 180447751.

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 157744081 - 2⁵ = 157744049 is a prime.

It is a super-2 number, since 2×157744081² = 49766390181069122, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 157744081.

It is not an unprimeable number, because it can be changed into a prime (157744091) 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 in 7 ways as a sum of consecutive naturals, for example, 166276 + ... + 167221.

It is an arithmetic number, because the mean of its divisors is an integer number (22010868).

Almost surely, 2^157744081 is an apocalyptic number.

157744081 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

157744081 is a deficient number, since it is larger than the sum of its proper divisors (18342863).

157744081 is a wasteful number, since it uses less digits than its factorization.

157744081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 333551.

The product of its (nonzero) digits is 31360, while the sum is 37.

The square root of 157744081 is about 12559.6210532006. The cubic root of 157744081 is about 540.3199761134.

The spelling of 157744081 in words is "one hundred fifty-seven million, seven hundred forty-four thousand, eighty-one".