45007861 has 4 divisors (see below), whose sum is σ = 45023724. Its totient is φ = 44992000.

The previous prime is 45007841. The next prime is 45007901. The reversal of 45007861 is 16870054.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 14205361 + 30802500 = 3769^2 + 5550^2 .

It is a cyclic number.

It is not a de Polignac number, because 45007861 - 2⁷ = 45007733 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 (45007841) 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, 2380 + ... + 9781.

It is an arithmetic number, because the mean of its divisors is an integer number (11255931).

Almost surely, 2^45007861 is an apocalyptic number.

It is an amenable number.

45007861 is a deficient number, since it is larger than the sum of its proper divisors (15863).

45007861 is a wasteful number, since it uses less digits than its factorization.

45007861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15862.

The product of its (nonzero) digits is 6720, while the sum is 31.

The square root of 45007861 is about 6708.7898312587. The cubic root of 45007861 is about 355.7100409011.

The spelling of 45007861 in words is "forty-five million, seven thousand, eight hundred sixty-one".