157220235 has 12 divisors (see below), whose sum is σ = 272515152. Its totient is φ = 83850768.

The previous prime is 157220227. The next prime is 157220243. The reversal of 157220235 is 532022751.

It is an interprime number because it is at equal distance from previous prime (157220227) and next prime (157220243).

It is not a de Polignac number, because 157220235 - 2³ = 157220227 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 157220199 and 157220208.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1746847 + ... + 1746936.

It is an arithmetic number, because the mean of its divisors is an integer number (22709596).

Almost surely, 2^157220235 is an apocalyptic number.

157220235 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

157220235 is a deficient number, since it is larger than the sum of its proper divisors (115294917).

157220235 is a wasteful number, since it uses less digits than its factorization.

157220235 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3493794 (or 3493791 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 27.

The square root of 157220235 is about 12538.7493395474. The cubic root of 157220235 is about 539.7212038219.

Adding to 157220235 its reverse (532022751), we get a palindrome (689242986).

It can be divided in two parts, 15722023 and 5, that added together give a triangular number (15722028 = T₅₆₀₇).

The spelling of 157220235 in words is "one hundred fifty-seven million, two hundred twenty thousand, two hundred thirty-five".