145885901 has 16 divisors (see below), whose sum is σ = 171433728. Its totient is φ = 121564800.

The previous prime is 145885897. The next prime is 145885919. The reversal of 145885901 is 109588541.

It is not a de Polignac number, because 145885901 - 2² = 145885897 is a prime.

It is a super-2 number, since 2×145885901² = 42565392221163602, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145885981) 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, 34271 + ... + 38291.

It is an arithmetic number, because the mean of its divisors is an integer number (10714608).

Almost surely, 2^145885901 is an apocalyptic number.

It is an amenable number.

145885901 is a deficient number, since it is larger than the sum of its proper divisors (25547827).

145885901 is an equidigital number, since it uses as much as digits as its factorization.

145885901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4172.

The product of its (nonzero) digits is 57600, while the sum is 41.

The square root of 145885901 is about 12078.3236005664. The cubic root of 145885901 is about 526.4265372139.

The spelling of 145885901 in words is "one hundred forty-five million, eight hundred eighty-five thousand, nine hundred one".