145594090 has 16 divisors (see below), whose sum is σ = 264772872. Its totient is φ = 57636864.

The previous prime is 145594081. The next prime is 145594139. The reversal of 145594090 is 90495541.

It can be written as a sum of positive squares in 4 ways, for example, as 107931321 + 37662769 = 10389^2 + 6137^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 74079 + ... + 76018.

Almost surely, 2^145594090 is an apocalyptic number.

145594090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

145594090 is a deficient number, since it is larger than the sum of its proper divisors (119178782).

145594090 is a wasteful number, since it uses less digits than its factorization.

145594090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150201.

The product of its (nonzero) digits is 32400, while the sum is 37.

The square root of 145594090 is about 12066.2376074732. The cubic root of 145594090 is about 526.0753047500.

The spelling of 145594090 in words is "one hundred forty-five million, five hundred ninety-four thousand, ninety".