155493273 has 16 divisors (see below), whose sum is σ = 230973120. Its totient is φ = 92387904.

The previous prime is 155493263. The next prime is 155493287. The reversal of 155493273 is 372394551.

It is a happy number.

It is not a de Polignac number, because 155493273 - 2¹³ = 155485081 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (155493253) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 67611 + ... + 69872.

It is an arithmetic number, because the mean of its divisors is an integer number (14435820).

Almost surely, 2^155493273 is an apocalyptic number.

155493273 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

155493273 is a deficient number, since it is larger than the sum of its proper divisors (75479847).

155493273 is a wasteful number, since it uses less digits than its factorization.

155493273 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137528.

The product of its digits is 113400, while the sum is 39.

The square root of 155493273 is about 12469.6941822965. The cubic root of 155493273 is about 537.7377616222.

The spelling of 155493273 in words is "one hundred fifty-five million, four hundred ninety-three thousand, two hundred seventy-three".