157743071 has 4 divisors (see below), whose sum is σ = 157773000. Its totient is φ = 157713144.

The previous prime is 157743067. The next prime is 157743109. The reversal of 157743071 is 170347751.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 170347751 = 7 ⋅24335393.

It is a cyclic number.

It is not a de Polignac number, because 157743071 - 2² = 157743067 is a prime.

It is a super-2 number, since 2×157743071² = 49765752897022082, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157743041) 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, 4721 + ... + 18378.

It is an arithmetic number, because the mean of its divisors is an integer number (39443250).

Almost surely, 2^157743071 is an apocalyptic number.

157743071 is a deficient number, since it is larger than the sum of its proper divisors (29929).

157743071 is an equidigital number, since it uses as much as digits as its factorization.

157743071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29928.

The product of its (nonzero) digits is 20580, while the sum is 35.

The square root of 157743071 is about 12559.5808449168. The cubic root of 157743071 is about 540.3188229284.

The spelling of 157743071 in words is "one hundred fifty-seven million, seven hundred forty-three thousand, seventy-one".