45451330 has 8 divisors (see below), whose sum is σ = 81812412. Its totient is φ = 18180528.

The previous prime is 45451327. The next prime is 45451337. The reversal of 45451330 is 3315454.

It can be written as a sum of positive squares in 2 ways, for example, as 43204329 + 2247001 = 6573^2 + 1499^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 45451295 and 45451304.

It is not an unprimeable number, because it can be changed into a prime (45451337) 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, 2272557 + ... + 2272576.

Almost surely, 2^45451330 is an apocalyptic number.

45451330 is a deficient number, since it is larger than the sum of its proper divisors (36361082).

45451330 is a wasteful number, since it uses less digits than its factorization.

45451330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4545140.

The product of its (nonzero) digits is 3600, while the sum is 25.

The square root of 45451330 is about 6741.7601559237. The cubic root of 45451330 is about 356.8745122539.

Adding to 45451330 its reverse (3315454), we get a palindrome (48766784).

The spelling of 45451330 in words is "forty-five million, four hundred fifty-one thousand, three hundred thirty".