154401051257 has 2 divisors, whose sum is σ = 154401051258. Its totient is φ = 154401051256.

The previous prime is 154401051241. The next prime is 154401051313. The reversal of 154401051257 is 752150104451.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 154283198521 + 117852736 = 392789^2 + 10856^2 .

It is a cyclic number.

It is not a de Polignac number, because 154401051257 - 2⁴ = 154401051241 is a prime.

It is not a weakly prime, because it can be changed into another prime (154401051457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77200525628 + 77200525629.

It is an arithmetic number, because the mean of its divisors is an integer number (77200525629).

Almost surely, 2^154401051257 is an apocalyptic number.

It is an amenable number.

154401051257 is a deficient number, since it is larger than the sum of its proper divisors (1).

154401051257 is an equidigital number, since it uses as much as digits as its factorization.

154401051257 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 28000, while the sum is 35.

The spelling of 154401051257 in words is "one hundred fifty-four billion, four hundred one million, fifty-one thousand, two hundred fifty-seven".