157222693 has 2 divisors, whose sum is σ = 157222694. Its totient is φ = 157222692.

The previous prime is 157222679. The next prime is 157222729. The reversal of 157222693 is 396222751.

157222693 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 130005604 + 27217089 = 11402^2 + 5217^2 .

It is a cyclic number.

It is not a de Polignac number, because 157222693 - 2¹⁷ = 157091621 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (157222603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78611346 + 78611347.

It is an arithmetic number, because the mean of its divisors is an integer number (78611347).

Almost surely, 2^157222693 is an apocalyptic number.

It is an amenable number.

157222693 is a deficient number, since it is larger than the sum of its proper divisors (1).

157222693 is an equidigital number, since it uses as much as digits as its factorization.

157222693 is an evil number, because the sum of its binary digits is even.

The product of its digits is 45360, while the sum is 37.

The square root of 157222693 is about 12538.8473553194. The cubic root of 157222693 is about 539.7240164959.

The spelling of 157222693 in words is "one hundred fifty-seven million, two hundred twenty-two thousand, six hundred ninety-three".