45478051 has 4 divisors (see below), whose sum is σ = 46101112. Its totient is φ = 44854992.

The previous prime is 45477997. The next prime is 45478087. The reversal of 45478051 is 15087454.

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

It is a cyclic number.

It is not a de Polignac number, because 45478051 - 2¹³ = 45469859 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 45477998 and 45478016.

It is not an unprimeable number, because it can be changed into a prime (45478651) 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, 311421 + ... + 311566.

It is an arithmetic number, because the mean of its divisors is an integer number (11525278).

Almost surely, 2^45478051 is an apocalyptic number.

45478051 is a deficient number, since it is larger than the sum of its proper divisors (623061).

45478051 is an equidigital number, since it uses as much as digits as its factorization.

45478051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 623060.

The product of its (nonzero) digits is 22400, while the sum is 34.

The square root of 45478051 is about 6743.7416172330. The cubic root of 45478051 is about 356.9444344886.

The spelling of 45478051 in words is "forty-five million, four hundred seventy-eight thousand, fifty-one".