157221059 has 2 divisors, whose sum is σ = 157221060. Its totient is φ = 157221058.

The previous prime is 157221041. The next prime is 157221073. The reversal of 157221059 is 950122751.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-157221059 is a prime.

It is a super-2 number, since 2×157221059² = 49436922786162962, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (157221079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78610529 + 78610530.

It is an arithmetic number, because the mean of its divisors is an integer number (78610530).

Almost surely, 2^157221059 is an apocalyptic number.

157221059 is a deficient number, since it is larger than the sum of its proper divisors (1).

157221059 is an equidigital number, since it uses as much as digits as its factorization.

157221059 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6300, while the sum is 32.

The square root of 157221059 is about 12538.7821976458. The cubic root of 157221059 is about 539.7221467232.

The spelling of 157221059 in words is "one hundred fifty-seven million, two hundred twenty-one thousand, fifty-nine".