155253457 has 2 divisors, whose sum is σ = 155253458. Its totient is φ = 155253456.

The previous prime is 155253431. The next prime is 155253467. The reversal of 155253457 is 754352551.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 81018001 + 74235456 = 9001^2 + 8616^2 .

It is a cyclic number.

It is not a de Polignac number, because 155253457 - 2¹¹ = 155251409 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (155253467) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77626728 + 77626729.

It is an arithmetic number, because the mean of its divisors is an integer number (77626729).

Almost surely, 2^155253457 is an apocalyptic number.

It is an amenable number.

155253457 is a deficient number, since it is larger than the sum of its proper divisors (1).

155253457 is an equidigital number, since it uses as much as digits as its factorization.

155253457 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 105000, while the sum is 37.

The square root of 155253457 is about 12460.0745182362. The cubic root of 155253457 is about 537.4611698648.

The spelling of 155253457 in words is "one hundred fifty-five million, two hundred fifty-three thousand, four hundred fifty-seven".