145304554 has 8 divisors (see below), whose sum is σ = 218295648. Its totient is φ = 72539340.

The previous prime is 145304539. The next prime is 145304563. The reversal of 145304554 is 455403541.

It is a happy number.

145304554 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×145304554² = 42226826826277832, 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, 54852 + ... + 57439.

It is an arithmetic number, because the mean of its divisors is an integer number (27286956).

Almost surely, 2^145304554 is an apocalyptic number.

145304554 is a deficient number, since it is larger than the sum of its proper divisors (72991094).

145304554 is a wasteful number, since it uses less digits than its factorization.

145304554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112940.

The product of its (nonzero) digits is 24000, while the sum is 31.

The square root of 145304554 is about 12054.2338620088. The cubic root of 145304554 is about 525.7263464003.

The spelling of 145304554 in words is "one hundred forty-five million, three hundred four thousand, five hundred fifty-four".