145597090 has 16 divisors (see below), whose sum is σ = 263746872. Its totient is φ = 57867264.

The previous prime is 145597087. The next prime is 145597093. The reversal of 145597090 is 90795541.

It is an interprime number because it is at equal distance from previous prime (145597087) and next prime (145597093).

It can be written as a sum of positive squares in 4 ways, for example, as 112338801 + 33258289 = 10599^2 + 5767^2 .

It is not an unprimeable number, because it can be changed into a prime (145597093) 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, 44799 + ... + 47938.

Almost surely, 2^145597090 is an apocalyptic number.

145597090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

145597090 is a deficient number, since it is larger than the sum of its proper divisors (118149782).

145597090 is a wasteful number, since it uses less digits than its factorization.

145597090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92901.

The product of its (nonzero) digits is 56700, while the sum is 40.

The square root of 145597090 is about 12066.3619206453. The cubic root of 145597090 is about 526.0789180264.

The spelling of 145597090 in words is "one hundred forty-five million, five hundred ninety-seven thousand, ninety".