155268457 has 4 divisors (see below), whose sum is σ = 155293776. Its totient is φ = 155243140.

The previous prime is 155268431. The next prime is 155268461. The reversal of 155268457 is 754862551.

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 a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 155268457 - 2¹⁹ = 154744169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (155268427) 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, 2982 + ... + 17872.

It is an arithmetic number, because the mean of its divisors is an integer number (38823444).

Almost surely, 2^155268457 is an apocalyptic number.

It is an amenable number.

155268457 is a deficient number, since it is larger than the sum of its proper divisors (25319).

155268457 is a wasteful number, since it uses less digits than its factorization.

155268457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25318.

The product of its digits is 336000, while the sum is 43.

The square root of 155268457 is about 12460.6764262619. The cubic root of 155268457 is about 537.4784784604.

The spelling of 155268457 in words is "one hundred fifty-five million, two hundred sixty-eight thousand, four hundred fifty-seven".