145212554 has 16 divisors (see below), whose sum is σ = 229524000. Its totient is φ = 68712624.

The previous prime is 145212553. The next prime is 145212559. The reversal of 145212554 is 455212541.

It is not an unprimeable number, because it can be changed into a prime (145212553) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57629 + ... + 60095.

It is an arithmetic number, because the mean of its divisors is an integer number (14345250).

Almost surely, 2^145212554 is an apocalyptic number.

145212554 is a deficient number, since it is larger than the sum of its proper divisors (84311446).

145212554 is a wasteful number, since it uses less digits than its factorization.

145212554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4037.

The product of its digits is 8000, while the sum is 29.

The square root of 145212554 is about 12050.4171712020. The cubic root of 145212554 is about 525.6153679209.

The spelling of 145212554 in words is "one hundred forty-five million, two hundred twelve thousand, five hundred fifty-four".