157033253 has 4 divisors (see below), whose sum is σ = 169112748. Its totient is φ = 144953760.

The previous prime is 157033249. The next prime is 157033297. The reversal of 157033253 is 352330751.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 352330751 = 397 ⋅887483.

It can be written as a sum of positive squares in 2 ways, for example, as 18335524 + 138697729 = 4282^2 + 11777^2 .

It is a cyclic number.

It is not a de Polignac number, because 157033253 - 2² = 157033249 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 (157033243) 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, 6039728 + ... + 6039753.

It is an arithmetic number, because the mean of its divisors is an integer number (42278187).

Almost surely, 2^157033253 is an apocalyptic number.

157033253 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

157033253 is a deficient number, since it is larger than the sum of its proper divisors (12079495).

157033253 is a wasteful number, since it uses less digits than its factorization.

157033253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12079494.

The product of its (nonzero) digits is 9450, while the sum is 29.

The square root of 157033253 is about 12531.2909550453. The cubic root of 157033253 is about 539.5071554969.

The spelling of 157033253 in words is "one hundred fifty-seven million, thirty-three thousand, two hundred fifty-three".