145622555 has 32 divisors (see below), whose sum is σ = 201445440. Its totient is φ = 100154880.

The previous prime is 145622549. The next prime is 145622567. The reversal of 145622555 is 555226541.

It is not a de Polignac number, because 145622555 - 2⁸ = 145622299 is a prime.

It is a nialpdrome in base 15.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 74369 + ... + 76301.

It is an arithmetic number, because the mean of its divisors is an integer number (6295170).

Almost surely, 2^145622555 is an apocalyptic number.

145622555 is a deficient number, since it is larger than the sum of its proper divisors (55822885).

145622555 is a wasteful number, since it uses less digits than its factorization.

145622555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2031.

The product of its digits is 60000, while the sum is 35.

The square root of 145622555 is about 12067.4170807178. The cubic root of 145622555 is about 526.1095867225.

The spelling of 145622555 in words is "one hundred forty-five million, six hundred twenty-two thousand, five hundred fifty-five".