157722151 has 8 divisors (see below), whose sum is σ = 163207440. Its totient is φ = 152319552.

The previous prime is 157722143. The next prime is 157722167. The reversal of 157722151 is 151227751.

157722151 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 157722151 - 2³ = 157722143 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 (157722101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16780 + ... + 24433.

It is an arithmetic number, because the mean of its divisors is an integer number (20400930).

Almost surely, 2^157722151 is an apocalyptic number.

157722151 is a deficient number, since it is larger than the sum of its proper divisors (5485289).

157722151 is an equidigital number, since it uses as much as digits as its factorization.

157722151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41345.

The product of its digits is 4900, while the sum is 31.

The square root of 157722151 is about 12558.7479869611. The cubic root of 157722151 is about 540.2949360482.

The spelling of 157722151 in words is "one hundred fifty-seven million, seven hundred twenty-two thousand, one hundred fifty-one".