45420503 has 4 divisors (see below), whose sum is σ = 45467328. Its totient is φ = 45373680.

The previous prime is 45420499. The next prime is 45420509. The reversal of 45420503 is 30502454.

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 45420503 - 2² = 45420499 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45420509) 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, 21926 + ... + 23907.

It is an arithmetic number, because the mean of its divisors is an integer number (11366832).

Almost surely, 2^45420503 is an apocalyptic number.

45420503 is a deficient number, since it is larger than the sum of its proper divisors (46825).

45420503 is an equidigital number, since it uses as much as digits as its factorization.

45420503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46824.

The product of its (nonzero) digits is 2400, while the sum is 23.

The square root of 45420503 is about 6739.4734957562. The cubic root of 45420503 is about 356.7938115812.

Adding to 45420503 its reverse (30502454), we get a palindrome (75922957).

The spelling of 45420503 in words is "forty-five million, four hundred twenty thousand, five hundred three".