145721795 has 8 divisors (see below), whose sum is σ = 176025120. Its totient is φ = 115804800.

The previous prime is 145721789. The next prime is 145721819. The reversal of 145721795 is 597127541.

145721795 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-145721795 is a prime.

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, 95750 + ... + 97259.

It is an arithmetic number, because the mean of its divisors is an integer number (22003140).

Almost surely, 2^145721795 is an apocalyptic number.

145721795 is a deficient number, since it is larger than the sum of its proper divisors (30303325).

145721795 is a wasteful number, since it uses less digits than its factorization.

145721795 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193165.

The product of its digits is 88200, while the sum is 41.

The square root of 145721795 is about 12071.5282793853. The cubic root of 145721795 is about 526.2290720121.

The spelling of 145721795 in words is "one hundred forty-five million, seven hundred twenty-one thousand, seven hundred ninety-five".