145032551 has 4 divisors (see below), whose sum is σ = 145095552. Its totient is φ = 144969552.

The previous prime is 145032533. The next prime is 145032571. The reversal of 145032551 is 155230541.

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

It is a cyclic number.

It is not a de Polignac number, because 145032551 - 2²⁶ = 77923687 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 145032551.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145032571) 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, 27911 + ... + 32696.

It is an arithmetic number, because the mean of its divisors is an integer number (36273888).

Almost surely, 2^145032551 is an apocalyptic number.

145032551 is a deficient number, since it is larger than the sum of its proper divisors (63001).

145032551 is an equidigital number, since it uses as much as digits as its factorization.

145032551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63000.

The product of its (nonzero) digits is 3000, while the sum is 26.

The square root of 145032551 is about 12042.9461096527. The cubic root of 145032551 is about 525.3980968456.

The spelling of 145032551 in words is "one hundred forty-five million, thirty-two thousand, five hundred fifty-one".