145052553 has 4 divisors (see below), whose sum is σ = 193403408. Its totient is φ = 96701700.

The previous prime is 145052507. The next prime is 145052561. The reversal of 145052553 is 355250541.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 145052553 - 2¹² = 145048457 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 145052553.

It is not an unprimeable number, because it can be changed into a prime (145052753) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24175423 + ... + 24175428.

It is an arithmetic number, because the mean of its divisors is an integer number (48350852).

Almost surely, 2^145052553 is an apocalyptic number.

It is an amenable number.

145052553 is a deficient number, since it is larger than the sum of its proper divisors (48350855).

145052553 is an equidigital number, since it uses as much as digits as its factorization.

145052553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48350854.

The product of its (nonzero) digits is 15000, while the sum is 30.

The square root of 145052553 is about 12043.7765256584. The cubic root of 145052553 is about 525.4222489631.

The spelling of 145052553 in words is "one hundred forty-five million, fifty-two thousand, five hundred fifty-three".