157019701 has 4 divisors (see below), whose sum is σ = 166256172. Its totient is φ = 147783232.

The previous prime is 157019699. The next prime is 157019711. The reversal of 157019701 is 107910751.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 107910751 = 13 ⋅8300827.

It can be written as a sum of positive squares in 2 ways, for example, as 118592100 + 38427601 = 10890^2 + 6199^2 .

It is a cyclic number.

It is not a de Polignac number, because 157019701 - 2¹ = 157019699 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157019711) 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, 4618210 + ... + 4618243.

It is an arithmetic number, because the mean of its divisors is an integer number (41564043).

Almost surely, 2^157019701 is an apocalyptic number.

It is an amenable number.

157019701 is a deficient number, since it is larger than the sum of its proper divisors (9236471).

157019701 is an equidigital number, since it uses as much as digits as its factorization.

157019701 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9236470.

The product of its (nonzero) digits is 2205, while the sum is 31.

The square root of 157019701 is about 12530.7502169663. The cubic root of 157019701 is about 539.4916351932.

The spelling of 157019701 in words is "one hundred fifty-seven million, nineteen thousand, seven hundred one".