172757461 has 2 divisors, whose sum is σ = 172757462. Its totient is φ = 172757460.

The previous prime is 172757447. The next prime is 172757483. The reversal of 172757461 is 164757271.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 139476100 + 33281361 = 11810^2 + 5769^2 .

It is a cyclic number.

It is not a de Polignac number, because 172757461 - 2¹⁵ = 172724693 is a prime.

It is a Chen prime.

It is equal to p_9648625 and since 172757461 and 9648625 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (172757491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86378730 + 86378731.

It is an arithmetic number, because the mean of its divisors is an integer number (86378731).

Almost surely, 2^172757461 is an apocalyptic number.

It is an amenable number.

172757461 is a deficient number, since it is larger than the sum of its proper divisors (1).

172757461 is an equidigital number, since it uses as much as digits as its factorization.

172757461 is an evil number, because the sum of its binary digits is even.

The product of its digits is 82320, while the sum is 40.

The square root of 172757461 is about 13143.7232548468. The cubic root of 172757461 is about 556.9449506002.

The spelling of 172757461 in words is "one hundred seventy-two million, seven hundred fifty-seven thousand, four hundred sixty-one".