145091401 has 24 divisors (see below), whose sum is σ = 183292800. Its totient is φ = 114751728.

The previous prime is 145091389. The next prime is 145091461. The reversal of 145091401 is 104190541.

145091401 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 145091401 - 2⁷ = 145091273 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145091461) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 56716 + ... + 59218.

It is an arithmetic number, because the mean of its divisors is an integer number (7637200).

Almost surely, 2^145091401 is an apocalyptic number.

It is an amenable number.

145091401 is a deficient number, since it is larger than the sum of its proper divisors (38201399).

145091401 is an equidigital number, since it uses as much as digits as its factorization.

145091401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2550 (or 2523 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 25.

The square root of 145091401 is about 12045.3892008519. The cubic root of 145091401 is about 525.4691510023.

The spelling of 145091401 in words is "one hundred forty-five million, ninety-one thousand, four hundred one".