154225457 has 2 divisors, whose sum is σ = 154225458. Its totient is φ = 154225456.

The previous prime is 154225447. The next prime is 154225481. The reversal of 154225457 is 754522451.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 99820081 + 54405376 = 9991^2 + 7376^2 .

It is a cyclic number.

It is not a de Polignac number, because 154225457 - 2²² = 150031153 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (154225427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77112728 + 77112729.

It is an arithmetic number, because the mean of its divisors is an integer number (77112729).

Almost surely, 2^154225457 is an apocalyptic number.

It is an amenable number.

154225457 is a deficient number, since it is larger than the sum of its proper divisors (1).

154225457 is an equidigital number, since it uses as much as digits as its factorization.

154225457 is an evil number, because the sum of its binary digits is even.

The product of its digits is 56000, while the sum is 35.

The square root of 154225457 is about 12418.7542450924. The cubic root of 154225457 is about 536.2722880020.

The spelling of 154225457 in words is "one hundred fifty-four million, two hundred twenty-five thousand, four hundred fifty-seven".