172881253 has 2 divisors, whose sum is σ = 172881254. Its totient is φ = 172881252.

The previous prime is 172881139. The next prime is 172881329. The reversal of 172881253 is 352188271.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 130462084 + 42419169 = 11422^2 + 6513^2 .

It is a cyclic number.

It is not a de Polignac number, because 172881253 - 2¹⁷ = 172750181 is a prime.

It is a super-3 number, since 3×172881253³ (a number of 26 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (172881053) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86440626 + 86440627.

It is an arithmetic number, because the mean of its divisors is an integer number (86440627).

Almost surely, 2^172881253 is an apocalyptic number.

It is an amenable number.

172881253 is a deficient number, since it is larger than the sum of its proper divisors (1).

172881253 is an equidigital number, since it uses as much as digits as its factorization.

172881253 is an evil number, because the sum of its binary digits is even.

The product of its digits is 26880, while the sum is 37.

The square root of 172881253 is about 13148.4315794698. The cubic root of 172881253 is about 557.0779479780.

The spelling of 172881253 in words is "one hundred seventy-two million, eight hundred eighty-one thousand, two hundred fifty-three".