45121784 has 16 divisors (see below), whose sum is σ = 86038200. Its totient is φ = 22178272.

The previous prime is 45121777. The next prime is 45121787. The reversal of 45121784 is 48712154.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 45121784.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45121787) 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, 47327 + ... + 48270.

Almost surely, 2^45121784 is an apocalyptic number.

It is an amenable number.

45121784 is a deficient number, since it is larger than the sum of its proper divisors (40916416).

45121784 is a wasteful number, since it uses less digits than its factorization.

45121784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95662 (or 95658 counting only the distinct ones).

The product of its digits is 8960, while the sum is 32.

The square root of 45121784 is about 6717.2750427536. The cubic root of 45121784 is about 356.0099100890.

It can be divided in two parts, 4512 and 1784, that multiplied together give a palindrome (8049408).

The spelling of 45121784 in words is "forty-five million, one hundred twenty-one thousand, seven hundred eighty-four".