45400643 has 8 divisors (see below), whose sum is σ = 47543328. Its totient is φ = 43272064.

The previous prime is 45400639. The next prime is 45400657. The reversal of 45400643 is 34600454.

It is a Cunningham number, because it is equal to 6738²-1.

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

It is a cyclic number.

It is not a de Polignac number, because 45400643 - 2² = 45400639 is a prime.

It is a super-2 number, since 2×45400643² = 4122436769626898, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45400603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3371 + ... + 10107.

It is an arithmetic number, because the mean of its divisors is an integer number (5942916).

Almost surely, 2^45400643 is an apocalyptic number.

45400643 is a deficient number, since it is larger than the sum of its proper divisors (2142685).

45400643 is a wasteful number, since it uses less digits than its factorization.

45400643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7053.

The product of its (nonzero) digits is 5760, while the sum is 26.

The square root of 45400643 is about 6737.9999257940. Note that the first 4 decimals coincide. The cubic root of 45400643 is about 356.7418016030.

The spelling of 45400643 in words is "forty-five million, four hundred thousand, six hundred forty-three".