145976801 has 4 divisors (see below), whose sum is σ = 146001072. Its totient is φ = 145952532.

The previous prime is 145976767. The next prime is 145976813. The reversal of 145976801 is 108679541.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-145976801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145975801) 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, 4370 + ... + 17636.

It is an arithmetic number, because the mean of its divisors is an integer number (36500268).

Almost surely, 2^145976801 is an apocalyptic number.

It is an amenable number.

145976801 is a deficient number, since it is larger than the sum of its proper divisors (24271).

145976801 is a wasteful number, since it uses less digits than its factorization.

145976801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24270.

The product of its (nonzero) digits is 60480, while the sum is 41.

The square root of 145976801 is about 12082.0859540065. The cubic root of 145976801 is about 526.5358514944.

The spelling of 145976801 in words is "one hundred forty-five million, nine hundred seventy-six thousand, eight hundred one".