172093357 has 2 divisors, whose sum is σ = 172093358. Its totient is φ = 172093356.

The previous prime is 172093349. The next prime is 172093373. The reversal of 172093357 is 753390271.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 130439241 + 41654116 = 11421^2 + 6454^2 .

It is a cyclic number.

It is not a de Polignac number, because 172093357 - 2³ = 172093349 is a prime.

It is a super-2 number, since 2×172093357² = 59232247047058898, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (172093387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86046678 + 86046679.

It is an arithmetic number, because the mean of its divisors is an integer number (86046679).

Almost surely, 2^172093357 is an apocalyptic number.

It is an amenable number.

172093357 is a deficient number, since it is larger than the sum of its proper divisors (1).

172093357 is an equidigital number, since it uses as much as digits as its factorization.

172093357 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 39690, while the sum is 37.

The square root of 172093357 is about 13118.4357680327. The cubic root of 172093357 is about 556.2303759100.

The spelling of 172093357 in words is "one hundred seventy-two million, ninety-three thousand, three hundred fifty-seven".