45429178 has 4 divisors (see below), whose sum is σ = 68143770. Its totient is φ = 22714588.

The previous prime is 45429169. The next prime is 45429179. The reversal of 45429178 is 87192454.

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

It can be written as a sum of positive squares in only one way, i.e., 40793769 + 4635409 = 6387^2 + 2153^2 .

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 45429178.

It is not an unprimeable number, because it can be changed into a prime (45429179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11357293 + ... + 11357296.

Almost surely, 2^45429178 is an apocalyptic number.

45429178 is a deficient number, since it is larger than the sum of its proper divisors (22714592).

45429178 is a wasteful number, since it uses less digits than its factorization.

45429178 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22714591.

The product of its digits is 80640, while the sum is 40.

The square root of 45429178 is about 6740.1170612980. The cubic root of 45429178 is about 356.8165251803.

The spelling of 45429178 in words is "forty-five million, four hundred twenty-nine thousand, one hundred seventy-eight".