155461493 has 8 divisors (see below), whose sum is σ = 171742080. Its totient is φ = 139538880.

The previous prime is 155461487. The next prime is 155461511. The reversal of 155461493 is 394164551.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 155461493 - 2⁶ = 155461429 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155461483) 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 in 7 ways as a sum of consecutive naturals, for example, 88580 + ... + 90317.

It is an arithmetic number, because the mean of its divisors is an integer number (21467760).

Almost surely, 2^155461493 is an apocalyptic number.

It is an amenable number.

155461493 is a deficient number, since it is larger than the sum of its proper divisors (16280587).

155461493 is a wasteful number, since it uses less digits than its factorization.

155461493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178987.

The product of its digits is 64800, while the sum is 38.

The square root of 155461493 is about 12468.4198277087. The cubic root of 155461493 is about 537.7011245165.

The spelling of 155461493 in words is "one hundred fifty-five million, four hundred sixty-one thousand, four hundred ninety-three".