97157429 has 2 divisors, whose sum is σ = 97157430. Its totient is φ = 97157428.

The previous prime is 97157407. The next prime is 97157447. The reversal of 97157429 is 92475179.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 96628900 + 528529 = 9830^2 + 727^2 .

It is a cyclic number.

It is not a de Polignac number, because 97157429 - 2¹² = 97153333 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 97157429.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (97157479) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48578714 + 48578715.

It is an arithmetic number, because the mean of its divisors is an integer number (48578715).

Almost surely, 2^97157429 is an apocalyptic number.

It is an amenable number.

97157429 is a deficient number, since it is larger than the sum of its proper divisors (1).

97157429 is an equidigital number, since it uses as much as digits as its factorization.

97157429 is an evil number, because the sum of its binary digits is even.

The product of its digits is 158760, while the sum is 44.

The square root of 97157429 is about 9856.8468081836. The cubic root of 97157429 is about 459.7185250275.

The spelling of 97157429 in words is "ninety-seven million, one hundred fifty-seven thousand, four hundred twenty-nine".