45438651 has 20 divisors (see below), whose sum is σ = 68842224. Its totient is φ = 29862000.

The previous prime is 45438629. The next prime is 45438661. The reversal of 45438651 is 15683454.

It is a happy number.

It is not a de Polignac number, because 45438651 - 2¹³ = 45430459 is a prime.

It is not an unprimeable number, because it can be changed into a prime (45438611) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1801 + ... + 9701.

Almost surely, 2^45438651 is an apocalyptic number.

45438651 is a deficient number, since it is larger than the sum of its proper divisors (23403573).

45438651 is an equidigital number, since it uses as much as digits as its factorization.

45438651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7984 (or 7975 counting only the distinct ones).

The product of its digits is 57600, while the sum is 36.

The square root of 45438651 is about 6740.8197572699. The cubic root of 45438651 is about 356.8413248661.

The spelling of 45438651 in words is "forty-five million, four hundred thirty-eight thousand, six hundred fifty-one".