157023547 has 4 divisors (see below), whose sum is σ = 158464240. Its totient is φ = 155582856.

The previous prime is 157023533. The next prime is 157023571. The reversal of 157023547 is 745320751.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 745320751 = 7 ⋅106474393.

It is a cyclic number.

It is not a de Polignac number, because 157023547 - 2¹¹ = 157021499 is a prime.

It is a super-2 number, since 2×157023547² = 49312788624922418, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (157023527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 720183 + ... + 720400.

It is an arithmetic number, because the mean of its divisors is an integer number (39616060).

Almost surely, 2^157023547 is an apocalyptic number.

157023547 is a deficient number, since it is larger than the sum of its proper divisors (1440693).

157023547 is a wasteful number, since it uses less digits than its factorization.

157023547 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1440692.

The product of its (nonzero) digits is 29400, while the sum is 34.

The square root of 157023547 is about 12530.9036785062. The cubic root of 157023547 is about 539.4960398802.

The spelling of 157023547 in words is "one hundred fifty-seven million, twenty-three thousand, five hundred forty-seven".