45720001 has 4 divisors (see below), whose sum is σ = 45975600. Its totient is φ = 45464404.

The previous prime is 45719981. The next prime is 45720007. The reversal of 45720001 is 10002754.

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 45720001 - 2⁹ = 45719489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45720007) 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, 127531 + ... + 127888.

It is an arithmetic number, because the mean of its divisors is an integer number (11493900).

Almost surely, 2^45720001 is an apocalyptic number.

It is an amenable number.

45720001 is a deficient number, since it is larger than the sum of its proper divisors (255599).

45720001 is a wasteful number, since it uses less digits than its factorization.

45720001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255598.

The product of its (nonzero) digits is 280, while the sum is 19.

The square root of 45720001 is about 6761.6566756972. The cubic root of 45720001 is about 357.5763144172.

Adding to 45720001 its reverse (10002754), we get a palindrome (55722755).

The spelling of 45720001 in words is "forty-five million, seven hundred twenty thousand, one".