157312033 has 4 divisors (see below), whose sum is σ = 166565700. Its totient is φ = 148058368.

The previous prime is 157312021. The next prime is 157312061. The reversal of 157312033 is 330213751.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 330213751 = 7 ⋅47173393.

It can be written as a sum of positive squares in 2 ways, for example, as 133818624 + 23493409 = 11568^2 + 4847^2 .

It is a cyclic number.

It is not a de Polignac number, because 157312033 - 2⁹ = 157311521 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 157311989 and 157312007.

It is not an unprimeable number, because it can be changed into a prime (157312063) 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, 4626808 + ... + 4626841.

It is an arithmetic number, because the mean of its divisors is an integer number (41641425).

Almost surely, 2^157312033 is an apocalyptic number.

It is an amenable number.

157312033 is a deficient number, since it is larger than the sum of its proper divisors (9253667).

157312033 is an equidigital number, since it uses as much as digits as its factorization.

157312033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9253666.

The product of its (nonzero) digits is 1890, while the sum is 25.

The square root of 157312033 is about 12542.4093777870. The cubic root of 157312033 is about 539.8262278080.

Adding to 157312033 its reverse (330213751), we get a palindrome (487525784).

The spelling of 157312033 in words is "one hundred fifty-seven million, three hundred twelve thousand, thirty-three".