45031402 has 36 divisors (see below), whose sum is σ = 77866866. Its totient is φ = 19518720.

The previous prime is 45031391. The next prime is 45031411. The reversal of 45031402 is 20413054.

It can be written as a sum of positive squares in 9 ways, for example, as 1879641 + 43151761 = 1371^2 + 6569^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 45031402.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 97452 + ... + 97912.

Almost surely, 2^45031402 is an apocalyptic number.

45031402 is a deficient number, since it is larger than the sum of its proper divisors (32835464).

45031402 is a wasteful number, since it uses less digits than its factorization.

45031402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 523 (or 493 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 45031402 is about 6710.5440912045. The cubic root of 45031402 is about 355.7720471845.

Adding to 45031402 its reverse (20413054), we get a palindrome (65444456).

The spelling of 45031402 in words is "forty-five million, thirty-one thousand, four hundred two".