45400005 has 48 divisors (see below), whose sum is σ = 90889344. Its totient is φ = 20534400.

The previous prime is 45400001. The next prime is 45400009. The reversal of 45400005 is 50000454.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (45400001) and next prime (45400009).

It is not a de Polignac number, because 45400005 - 2² = 45400001 is a prime.

It is a super-2 number, since 2×45400005² = 4122320908000050, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45400001) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 31102 + ... + 32528.

It is an arithmetic number, because the mean of its divisors is an integer number (1893528).

Almost surely, 2^45400005 is an apocalyptic number.

45400005 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

45400005 is an abundant number, since it is smaller than the sum of its proper divisors (45489339).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

45400005 is a wasteful number, since it uses less digits than its factorization.

45400005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1546 (or 1543 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 18.

The square root of 45400005 is about 6737.9525822018. The cubic root of 45400005 is about 356.7401305375.

Adding to 45400005 its reverse (50000454), we get a palindrome (95400459).

The spelling of 45400005 in words is "forty-five million, four hundred thousand, five".