156345553 has 8 divisors (see below), whose sum is σ = 192425408. Its totient is φ = 123701904.

The previous prime is 156345491. The next prime is 156345571. The reversal of 156345553 is 355543651.

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 156345553 - 2⁹ = 156345041 is a prime.

It is not an unprimeable number, because it can be changed into a prime (156345593) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 858951 + ... + 859132.

It is an arithmetic number, because the mean of its divisors is an integer number (24053176).

Almost surely, 2^156345553 is an apocalyptic number.

156345553 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

156345553 is a deficient number, since it is larger than the sum of its proper divisors (36079855).

156345553 is a wasteful number, since it uses less digits than its factorization.

156345553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1718103.

The product of its digits is 135000, while the sum is 37.

The square root of 156345553 is about 12503.8215358346. The cubic root of 156345553 is about 538.7184435735.

The spelling of 156345553 in words is "one hundred fifty-six million, three hundred forty-five thousand, five hundred fifty-three".