45420501 has 24 divisors (see below), whose sum is σ = 71655840. Its totient is φ = 25509792.

The previous prime is 45420499. The next prime is 45420509. The reversal of 45420501 is 10502454.

It is not a de Polignac number, because 45420501 - 2¹ = 45420499 is a prime.

It is a super-2 number, since 2×45420501² = 4126043822182002, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

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 23 ways as a sum of consecutive naturals, for example, 6055 + ... + 11291.

It is an arithmetic number, because the mean of its divisors is an integer number (2985660).

Almost surely, 2^45420501 is an apocalyptic number.

It is an amenable number.

45420501 is a deficient number, since it is larger than the sum of its proper divisors (26235339).

45420501 is a wasteful number, since it uses less digits than its factorization.

45420501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5313 (or 5306 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 21.

The square root of 45420501 is about 6739.4733473766. The cubic root of 45420501 is about 356.7938063443.

Adding to 45420501 its reverse (10502454), we get a palindrome (55922955).

The spelling of 45420501 in words is "forty-five million, four hundred twenty thousand, five hundred one".