162973457 has 2 divisors, whose sum is σ = 162973458. Its totient is φ = 162973456.

The previous prime is 162973453. The next prime is 162973627. The reversal of 162973457 is 754379261.

162973457 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 115584001 + 47389456 = 10751^2 + 6884^2 .

It is an emirp because it is prime and its reverse (754379261) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 162973457 - 2² = 162973453 is a prime.

It is not a weakly prime, because it can be changed into another prime (162973453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81486728 + 81486729.

It is an arithmetic number, because the mean of its divisors is an integer number (81486729).

Almost surely, 2^162973457 is an apocalyptic number.

It is an amenable number.

162973457 is a deficient number, since it is larger than the sum of its proper divisors (1).

162973457 is an equidigital number, since it uses as much as digits as its factorization.

162973457 is an evil number, because the sum of its binary digits is even.

The product of its digits is 317520, while the sum is 44.

The square root of 162973457 is about 12766.1057883757. The cubic root of 162973457 is about 546.2259046775.

The spelling of 162973457 in words is "one hundred sixty-two million, nine hundred seventy-three thousand, four hundred fifty-seven".