45401378 has 24 divisors (see below), whose sum is σ = 76614384. Its totient is φ = 20152440.

The previous prime is 45401371. The next prime is 45401387. The reversal of 45401378 is 87310454.

It is a super-2 number, since 2×45401378² = 4122570248597768, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (45401371) by changing a digit.

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, 8225 + ... + 12587.

It is an arithmetic number, because the mean of its divisors is an integer number (3192266).

Almost surely, 2^45401378 is an apocalyptic number.

45401378 is a deficient number, since it is larger than the sum of its proper divisors (31213006).

45401378 is a wasteful number, since it uses less digits than its factorization.

45401378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4430 (or 4419 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 32.

The square root of 45401378 is about 6738.0544669808. The cubic root of 45401378 is about 356.7437267138.

The spelling of 45401378 in words is "forty-five million, four hundred one thousand, three hundred seventy-eight".