45542387 has 4 divisors (see below), whose sum is σ = 49682616. Its totient is φ = 41402160.

The previous prime is 45542359. The next prime is 45542429. The reversal of 45542387 is 78324554.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-45542387 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 45542387.

It is not an unprimeable number, because it can be changed into a prime (45542687) 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, 2070098 + ... + 2070119.

It is an arithmetic number, because the mean of its divisors is an integer number (12420654).

Almost surely, 2^45542387 is an apocalyptic number.

45542387 is a deficient number, since it is larger than the sum of its proper divisors (4140229).

45542387 is a wasteful number, since it uses less digits than its factorization.

45542387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4140228.

The product of its digits is 134400, while the sum is 38.

The square root of 45542387 is about 6748.5099836927. The cubic root of 45542387 is about 357.1126735710.

The spelling of 45542387 in words is "forty-five million, five hundred forty-two thousand, three hundred eighty-seven".