155396493 has 48 divisors (see below), whose sum is σ = 265824000. Its totient is φ = 87423840.

The previous prime is 155396491. The next prime is 155396503. The reversal of 155396493 is 394693551.

155396493 is a `hidden beast` number, since 1 + 553 + 9 + 6 + 4 + 93 = 666.

It is not a de Polignac number, because 155396493 - 2¹ = 155396491 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155396491) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 218823 + ... + 219531.

It is an arithmetic number, because the mean of its divisors is an integer number (5538000).

Almost surely, 2^155396493 is an apocalyptic number.

It is an amenable number.

155396493 is a deficient number, since it is larger than the sum of its proper divisors (110427507).

155396493 is an equidigital number, since it uses as much as digits as its factorization.

155396493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 807 (or 790 counting only the distinct ones).

The product of its digits is 437400, while the sum is 45.

The square root of 155396493 is about 12465.8129698789. The cubic root of 155396493 is about 537.6261746696.

The spelling of 155396493 in words is "one hundred fifty-five million, three hundred ninety-six thousand, four hundred ninety-three".