145055553 has 8 divisors (see below), whose sum is σ = 194217600. Its totient is φ = 96298608.

The previous prime is 145055539. The next prime is 145055563. The reversal of 145055553 is 355550541.

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

It is not a de Polignac number, because 145055553 - 2⁹ = 145055041 is a prime.

It is a super-2 number, since 2×145055553² = 42082226912271618, which contains 22 as substring.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (145055563) 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, 100438 + ... + 101871.

It is an arithmetic number, because the mean of its divisors is an integer number (24277200).

Almost surely, 2^145055553 is an apocalyptic number.

It is an amenable number.

145055553 is a deficient number, since it is larger than the sum of its proper divisors (49162047).

145055553 is a wasteful number, since it uses less digits than its factorization.

145055553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202551.

The product of its (nonzero) digits is 37500, while the sum is 33.

The square root of 145055553 is about 12043.9010706664. The cubic root of 145055553 is about 525.4258712270.

The spelling of 145055553 in words is "one hundred forty-five million, fifty-five thousand, five hundred fifty-three".