157355623 has 4 divisors (see below), whose sum is σ = 157618048. Its totient is φ = 157093200.

The previous prime is 157355617. The next prime is 157355657. The reversal of 157355623 is 326553751.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 326553751 = 307 ⋅1063693.

It is a cyclic number.

It is not a de Polignac number, because 157355623 - 2²¹ = 155258471 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 (157355423) 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 3 ways as a sum of consecutive naturals, for example, 130311 + ... + 131512.

It is an arithmetic number, because the mean of its divisors is an integer number (39404512).

Almost surely, 2^157355623 is an apocalyptic number.

157355623 is a deficient number, since it is larger than the sum of its proper divisors (262425).

157355623 is an equidigital number, since it uses as much as digits as its factorization.

157355623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 262424.

The product of its digits is 94500, while the sum is 37.

The square root of 157355623 is about 12544.1469618304. The cubic root of 157355623 is about 539.8760838208.

The spelling of 157355623 in words is "one hundred fifty-seven million, three hundred fifty-five thousand, six hundred twenty-three".