172562947 has 2 divisors, whose sum is σ = 172562948. Its totient is φ = 172562946.

The previous prime is 172562927. The next prime is 172562983. The reversal of 172562947 is 749265271.

It is a weak prime.

It is an emirp because it is prime and its reverse (749265271) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-172562947 is a prime.

It is not a weakly prime, because it can be changed into another prime (172562927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86281473 + 86281474.

It is an arithmetic number, because the mean of its divisors is an integer number (86281474).

Almost surely, 2^172562947 is an apocalyptic number.

172562947 is a deficient number, since it is larger than the sum of its proper divisors (1).

172562947 is an equidigital number, since it uses as much as digits as its factorization.

172562947 is an evil number, because the sum of its binary digits is even.

The product of its digits is 211680, while the sum is 43.

The square root of 172562947 is about 13136.3216693259. The cubic root of 172562947 is about 556.7358438099.

The spelling of 172562947 in words is "one hundred seventy-two million, five hundred sixty-two thousand, nine hundred forty-seven".