45322551 has 8 divisors (see below), whose sum is σ = 67144560. Its totient is φ = 30215016.

The previous prime is 45322549. The next prime is 45322567. The reversal of 45322551 is 15522354.

It is a happy number.

It is not a de Polignac number, because 45322551 - 2¹ = 45322549 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 1678613 = 45322551 / (4 + 5 + 3 + 2 + 2 + 5 + 5 + 1).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45322531) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 839280 + ... + 839333.

It is an arithmetic number, because the mean of its divisors is an integer number (8393070).

Almost surely, 2^45322551 is an apocalyptic number.

45322551 is a deficient number, since it is larger than the sum of its proper divisors (21822009).

45322551 is a wasteful number, since it uses less digits than its factorization.

45322551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1678622 (or 1678616 counting only the distinct ones).

The product of its digits is 6000, while the sum is 27.

The square root of 45322551 is about 6732.2025370602. The cubic root of 45322551 is about 356.5371446707.

The spelling of 45322551 in words is "forty-five million, three hundred twenty-two thousand, five hundred fifty-one".