145549810 has 32 divisors (see below), whose sum is σ = 299832192. Its totient is φ = 49833600.

The previous prime is 145549783. The next prime is 145549813. The reversal of 145549810 is 18945541.

It is a super-2 number, since 2×145549810² = 42369494382072200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 145549810.

It is not an unprimeable number, because it can be changed into a prime (145549813) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 99585 + ... + 101035.

It is an arithmetic number, because the mean of its divisors is an integer number (9369756).

Almost surely, 2^145549810 is an apocalyptic number.

145549810 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

145549810 is an abundant number, since it is smaller than the sum of its proper divisors (154282382).

145549810 is a wasteful number, since it uses less digits than its factorization.

145549810 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2898.

The product of its (nonzero) digits is 28800, while the sum is 37.

The square root of 145549810 is about 12064.4025960675. The cubic root of 145549810 is about 526.0219670162.

The spelling of 145549810 in words is "one hundred forty-five million, five hundred forty-nine thousand, eight hundred ten".