1551516341 has 2 divisors, whose sum is σ = 1551516342. Its totient is φ = 1551516340.

The previous prime is 1551516319. The next prime is 1551516349. The reversal of 1551516341 is 1436151551.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1034908900 + 516607441 = 32170^2 + 22729^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1551516341 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1551516298 and 1551516307.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1551516349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 775758170 + 775758171.

It is an arithmetic number, because the mean of its divisors is an integer number (775758171).

Almost surely, 2^1551516341 is an apocalyptic number.

It is an amenable number.

1551516341 is a deficient number, since it is larger than the sum of its proper divisors (1).

1551516341 is an equidigital number, since it uses as much as digits as its factorization.

1551516341 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9000, while the sum is 32.

The square root of 1551516341 is about 39389.2922124783. The cubic root of 1551516341 is about 1157.6717920378.

Adding to 1551516341 its reverse (1436151551), we get a palindrome (2987667892).

The spelling of 1551516341 in words is "one billion, five hundred fifty-one million, five hundred sixteen thousand, three hundred forty-one".