2517993551 has 2 divisors, whose sum is σ = 2517993552. Its totient is φ = 2517993550.

The previous prime is 2517993509. The next prime is 2517993559. The reversal of 2517993551 is 1553997152.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2517993551 - 2¹⁸ = 2517731407 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2517993496 and 2517993505.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2517993559) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1258996775 + 1258996776.

It is an arithmetic number, because the mean of its divisors is an integer number (1258996776).

Almost surely, 2^2517993551 is an apocalyptic number.

2517993551 is a deficient number, since it is larger than the sum of its proper divisors (1).

2517993551 is an equidigital number, since it uses as much as digits as its factorization.

2517993551 is an evil number, because the sum of its binary digits is even.

The product of its digits is 425250, while the sum is 47.

The square root of 2517993551 is about 50179.6129020542. The cubic root of 2517993551 is about 1360.4571615841.

The spelling of 2517993551 in words is "two billion, five hundred seventeen million, nine hundred ninety-three thousand, five hundred fifty-one".