172761461 has 2 divisors, whose sum is σ = 172761462. Its totient is φ = 172761460.

The previous prime is 172761431. The next prime is 172761467. The reversal of 172761461 is 164167271.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 91202500 + 81558961 = 9550^2 + 9031^2 .

It is a cyclic number.

It is not a de Polignac number, because 172761461 - 2¹⁸ = 172499317 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (172761467) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86380730 + 86380731.

It is an arithmetic number, because the mean of its divisors is an integer number (86380731).

Almost surely, 2^172761461 is an apocalyptic number.

It is an amenable number.

172761461 is a deficient number, since it is larger than the sum of its proper divisors (1).

172761461 is an equidigital number, since it uses as much as digits as its factorization.

172761461 is an evil number, because the sum of its binary digits is even.

The product of its digits is 14112, while the sum is 35.

The square root of 172761461 is about 13143.8754178515. The cubic root of 172761461 is about 556.9492490400.

The spelling of 172761461 in words is "one hundred seventy-two million, seven hundred sixty-one thousand, four hundred sixty-one".