45542978 has 8 divisors (see below), whose sum is σ = 73569468. Its totient is φ = 21019824.

The previous prime is 45542969. The next prime is 45542989. The reversal of 45542978 is 87924554.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 44528929 + 1014049 = 6673^2 + 1007^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 875801 + ... + 875852.

Almost surely, 2^45542978 is an apocalyptic number.

45542978 is a deficient number, since it is larger than the sum of its proper divisors (28026490).

45542978 is a wasteful number, since it uses less digits than its factorization.

45542978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1751668.

The product of its digits is 403200, while the sum is 44.

The square root of 45542978 is about 6748.5537709942. The cubic root of 45542978 is about 357.1142183055.

The spelling of 45542978 in words is "forty-five million, five hundred forty-two thousand, nine hundred seventy-eight".