145642555 has 16 divisors (see below), whose sum is σ = 183403584. Its totient is φ = 110816640.

The previous prime is 145642547. The next prime is 145642559. The reversal of 145642555 is 555246541.

145642555 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 145642555 - 2³ = 145642547 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145642559) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17317 + ... + 24313.

It is an arithmetic number, because the mean of its divisors is an integer number (11462724).

Almost surely, 2^145642555 is an apocalyptic number.

145642555 is a deficient number, since it is larger than the sum of its proper divisors (37761029).

145642555 is a wasteful number, since it uses less digits than its factorization.

145642555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7206.

The product of its digits is 120000, while the sum is 37.

The square root of 145642555 is about 12068.2457300140. The cubic root of 145642555 is about 526.1336711556.

The spelling of 145642555 in words is "one hundred forty-five million, six hundred forty-two thousand, five hundred fifty-five".