145254724 has 12 divisors (see below), whose sum is σ = 254475900. Its totient is φ = 72547328.

The previous prime is 145254701. The next prime is 145254737. The reversal of 145254724 is 427452541.

It can be written as a sum of positive squares in 2 ways, for example, as 19096900 + 126157824 = 4370^2 + 11232^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 145254724.

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, 15829 + ... + 23260.

It is an arithmetic number, because the mean of its divisors is an integer number (21206325).

Almost surely, 2^145254724 is an apocalyptic number.

It is an amenable number.

145254724 is a deficient number, since it is larger than the sum of its proper divisors (109221176).

145254724 is a wasteful number, since it uses less digits than its factorization.

145254724 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40022 (or 40020 counting only the distinct ones).

The product of its digits is 44800, while the sum is 34.

The square root of 145254724 is about 12052.1667761444. The cubic root of 145254724 is about 525.6662428951. Note that the first 3 decimals are identical.

The spelling of 145254724 in words is "one hundred forty-five million, two hundred fifty-four thousand, seven hundred twenty-four".