145233541 has 4 divisors (see below), whose sum is σ = 146730892. Its totient is φ = 143736192.

The previous prime is 145233509. The next prime is 145233577. The reversal of 145233541 is 145332541.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 115476516 + 29757025 = 10746^2 + 5455^2 .

It is a cyclic number.

It is not a de Polignac number, because 145233541 - 2⁵ = 145233509 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 (145233841) 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, 748530 + ... + 748723.

It is an arithmetic number, because the mean of its divisors is an integer number (36682723).

Almost surely, 2^145233541 is an apocalyptic number.

It is an amenable number.

145233541 is a deficient number, since it is larger than the sum of its proper divisors (1497351).

145233541 is an equidigital number, since it uses as much as digits as its factorization.

145233541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1497350.

The product of its digits is 7200, while the sum is 28.

The square root of 145233541 is about 12051.2879394694. The cubic root of 145233541 is about 525.6406884093.

It can be divided in two parts, 14523354 and 1, that added together give a triangular number (14523355 = T₅₃₈₉).

The spelling of 145233541 in words is "one hundred forty-five million, two hundred thirty-three thousand, five hundred forty-one".