157040747 has 4 divisors (see below), whose sum is σ = 166278456. Its totient is φ = 147803040.

The previous prime is 157040743. The next prime is 157040753. The reversal of 157040747 is 747040751.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 157040747 - 2² = 157040743 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (157040743) 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, 4618829 + ... + 4618862.

It is an arithmetic number, because the mean of its divisors is an integer number (41569614).

Almost surely, 2^157040747 is an apocalyptic number.

157040747 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

157040747 is a deficient number, since it is larger than the sum of its proper divisors (9237709).

157040747 is an equidigital number, since it uses as much as digits as its factorization.

157040747 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9237708.

The product of its (nonzero) digits is 27440, while the sum is 35.

The square root of 157040747 is about 12531.5899629696. The cubic root of 157040747 is about 539.5157375482.

The spelling of 157040747 in words is "one hundred fifty-seven million, forty thousand, seven hundred forty-seven".