155416457 has 4 divisors (see below), whose sum is σ = 177618816. Its totient is φ = 133214100.

The previous prime is 155416441. The next prime is 155416519. The reversal of 155416457 is 754614551.

155416457 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 754614551 = 13451 ⋅56101.

It is a cyclic number.

It is not a de Polignac number, because 155416457 - 2⁴ = 155416441 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 155416457.

It is not an unprimeable number, because it can be changed into a prime (155416427) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11101169 + ... + 11101182.

It is an arithmetic number, because the mean of its divisors is an integer number (44404704).

Almost surely, 2^155416457 is an apocalyptic number.

It is an amenable number.

155416457 is a deficient number, since it is larger than the sum of its proper divisors (22202359).

155416457 is an equidigital number, since it uses as much as digits as its factorization.

155416457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22202358.

The product of its digits is 84000, while the sum is 38.

The square root of 155416457 is about 12466.6136941834. The cubic root of 155416457 is about 537.6491968737.

The spelling of 155416457 in words is "one hundred fifty-five million, four hundred sixteen thousand, four hundred fifty-seven".