155504453 has 8 divisors (see below), whose sum is σ = 168690648. Its totient is φ = 142493184.

The previous prime is 155504399. The next prime is 155504473. The reversal of 155504453 is 354405551.

It can be written as a sum of positive squares in 4 ways, for example, as 178084 + 155326369 = 422^2 + 12463^2 .

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 155504453 - 2⁸ = 155504197 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 (155504473) 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, 41876 + ... + 45437.

It is an arithmetic number, because the mean of its divisors is an integer number (21086331).

Almost surely, 2^155504453 is an apocalyptic number.

155504453 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

155504453 is a deficient number, since it is larger than the sum of its proper divisors (13186195).

155504453 is a wasteful number, since it uses less digits than its factorization.

155504453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87463.

The product of its (nonzero) digits is 30000, while the sum is 32.

The square root of 155504453 is about 12470.1424610948. The cubic root of 155504453 is about 537.7506491338.

The spelling of 155504453 in words is "one hundred fifty-five million, five hundred four thousand, four hundred fifty-three".