1340004551 has 4 divisors (see below), whose sum is σ = 1340078400. Its totient is φ = 1339930704.

The previous prime is 1340004529. The next prime is 1340004641. The reversal of 1340004551 is 1554000431.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 1340004551 - 2⁶ = 1340004487 is a prime.

It is a super-2 number, since 2×1340004551² = 3591224393401423202, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1340004251) 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, 11210 + ... + 52968.

It is an arithmetic number, because the mean of its divisors is an integer number (335019600).

Almost surely, 2^1340004551 is an apocalyptic number.

1340004551 is a deficient number, since it is larger than the sum of its proper divisors (73849).

1340004551 is an equidigital number, since it uses as much as digits as its factorization.

1340004551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73848.

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

The square root of 1340004551 is about 36606.0725973164. The cubic root of 1340004551 is about 1102.4750195474.

Adding to 1340004551 its reverse (1554000431), we get a palindrome (2894004982).

The spelling of 1340004551 in words is "one billion, three hundred forty million, four thousand, five hundred fifty-one".