157505369 has 4 divisors (see below), whose sum is σ = 180006144. Its totient is φ = 135004596.

The previous prime is 157505363. The next prime is 157505393. The reversal of 157505369 is 963505751.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 157505369 - 2²⁰ = 156456793 is a prime.

It is a super-2 number, since 2×157505369² = 49615882527652322, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (157505363) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11250377 + ... + 11250390.

It is an arithmetic number, because the mean of its divisors is an integer number (45001536).

Almost surely, 2^157505369 is an apocalyptic number.

It is an amenable number.

157505369 is a deficient number, since it is larger than the sum of its proper divisors (22500775).

157505369 is an equidigital number, since it uses as much as digits as its factorization.

157505369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22500774.

The product of its (nonzero) digits is 141750, while the sum is 41.

The square root of 157505369 is about 12550.1143022683. The cubic root of 157505369 is about 540.0472855255.

The spelling of 157505369 in words is "one hundred fifty-seven million, five hundred five thousand, three hundred sixty-nine".