157612223 has 4 divisors (see below), whose sum is σ = 157662120. Its totient is φ = 157562328.

The previous prime is 157612199. The next prime is 157612249. The reversal of 157612223 is 322216751.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 322216751 = 383 ⋅841297.

It is a cyclic number.

It is not a de Polignac number, because 157612223 - 2²⁴ = 140835007 is a prime.

It is a super-2 number, since 2×157612223² = 49683225678003458, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157612283) 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 3 ways as a sum of consecutive naturals, for example, 19865 + ... + 26642.

It is an arithmetic number, because the mean of its divisors is an integer number (39415530).

Almost surely, 2^157612223 is an apocalyptic number.

157612223 is a deficient number, since it is larger than the sum of its proper divisors (49897).

157612223 is an equidigital number, since it uses as much as digits as its factorization.

157612223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49896.

The product of its digits is 5040, while the sum is 29.

The square root of 157612223 is about 12554.3706731958. The cubic root of 157612223 is about 540.1693833061.

Adding to 157612223 its reverse (322216751), we get a palindrome (479828974).

The spelling of 157612223 in words is "one hundred fifty-seven million, six hundred twelve thousand, two hundred twenty-three".