145401544 has 16 divisors (see below), whose sum is σ = 288665100. Its totient is φ = 68424192.

The previous prime is 145401523. The next prime is 145401559. The reversal of 145401544 is 445104541.

It can be written as a sum of positive squares in 2 ways, for example, as 120780100 + 24621444 = 10990^2 + 4962^2 .

It is a super-2 number, since 2×145401544² = 42283217995167872, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 534429 + ... + 534700.

Almost surely, 2^145401544 is an apocalyptic number.

It is an amenable number.

145401544 is a deficient number, since it is larger than the sum of its proper divisors (143263556).

145401544 is a wasteful number, since it uses less digits than its factorization.

145401544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1069152 (or 1069148 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 28.

The square root of 145401544 is about 12058.2562586802. The cubic root of 145401544 is about 525.8432935432.

The spelling of 145401544 in words is "one hundred forty-five million, four hundred one thousand, five hundred forty-four".