45450378 has 24 divisors (see below), whose sum is σ = 98907588. Its totient is φ = 15083712.

The previous prime is 45450347. The next prime is 45450389. The reversal of 45450378 is 87305454.

It can be written as a sum of positive squares in 2 ways, for example, as 41177889 + 4272489 = 6417^2 + 2067^2 .

It is a Curzon number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 1225 + ... + 9612.

Almost surely, 2^45450378 is an apocalyptic number.

45450378 is an abundant number, since it is smaller than the sum of its proper divisors (53457210).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

45450378 is a wasteful number, since it uses less digits than its factorization.

45450378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11078 (or 11075 counting only the distinct ones).

The product of its (nonzero) digits is 67200, while the sum is 36.

The square root of 45450378 is about 6741.6895508470. The cubic root of 45450378 is about 356.8720206003.

It can be divided in two parts, 454503 and 78, that added together give a triangular number (454581 = T₉₅₃).

The spelling of 45450378 in words is "forty-five million, four hundred fifty thousand, three hundred seventy-eight".