45051431 has 4 divisors (see below), whose sum is σ = 45901512. Its totient is φ = 44201352.

The previous prime is 45051421. The next prime is 45051473. The reversal of 45051431 is 13415054.

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 45051431 - 2¹⁴ = 45035047 is a prime.

It is a super-2 number, since 2×45051431² = 4059262870295522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 45051397 and 45051406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45051421) 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, 424961 + ... + 425066.

It is an arithmetic number, because the mean of its divisors is an integer number (11475378).

Almost surely, 2^45051431 is an apocalyptic number.

45051431 is a deficient number, since it is larger than the sum of its proper divisors (850081).

45051431 is an equidigital number, since it uses as much as digits as its factorization.

45051431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 850080.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 45051431 is about 6712.0362782095. The cubic root of 45051431 is about 355.8247859535.

Adding to 45051431 its reverse (13415054), we get a palindrome (58466485).

The spelling of 45051431 in words is "forty-five million, fifty-one thousand, four hundred thirty-one".