157021011 has 24 divisors (see below), whose sum is σ = 268812544. Its totient is φ = 89725320.

The previous prime is 157020989. The next prime is 157021013. The reversal of 157021011 is 110120751.

It is a happy number.

It is not a de Polignac number, because 157021011 - 2⁵ = 157020979 is a prime.

It is not an unprimeable number, because it can be changed into a prime (157021013) 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 23 ways as a sum of consecutive naturals, for example, 44455 + ... + 47856.

Almost surely, 2^157021011 is an apocalyptic number.

157021011 is a deficient number, since it is larger than the sum of its proper divisors (111791533).

157021011 is an frugal number, since it uses more digits than its factorization.

157021011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92333 (or 92321 counting only the distinct ones).

The product of its (nonzero) digits is 70, while the sum is 18.

The square root of 157021011 is about 12530.8024882687. The cubic root of 157021011 is about 539.4931354977.

Adding to 157021011 its reverse (110120751), we get a palindrome (267141762).

The spelling of 157021011 in words is "one hundred fifty-seven million, twenty-one thousand, eleven".