145057801 has 4 divisors (see below), whose sum is σ = 165780352. Its totient is φ = 124335252.

The previous prime is 145057793. The next prime is 145057819. The reversal of 145057801 is 108750541.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 145057801 - 2³ = 145057793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145057301) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10361265 + ... + 10361278.

It is an arithmetic number, because the mean of its divisors is an integer number (41445088).

Almost surely, 2^145057801 is an apocalyptic number.

It is an amenable number.

145057801 is a deficient number, since it is larger than the sum of its proper divisors (20722551).

145057801 is an equidigital number, since it uses as much as digits as its factorization.

145057801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20722550.

The product of its (nonzero) digits is 5600, while the sum is 31.

The square root of 145057801 is about 12043.9943955483. The cubic root of 145057801 is about 525.4285854774.

The spelling of 145057801 in words is "one hundred forty-five million, fifty-seven thousand, eight hundred one".