38748551 has 2 divisors, whose sum is σ = 38748552. Its totient is φ = 38748550.

The previous prime is 38748533. The next prime is 38748557. The reversal of 38748551 is 15584783.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-38748551 is a prime.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 38748499 and 38748508.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38748557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19374275 + 19374276.

It is an arithmetic number, because the mean of its divisors is an integer number (19374276).

Almost surely, 2^38748551 is an apocalyptic number.

38748551 is a deficient number, since it is larger than the sum of its proper divisors (1).

38748551 is an equidigital number, since it uses as much as digits as its factorization.

38748551 is an evil number, because the sum of its binary digits is even.

The product of its digits is 134400, while the sum is 41.

The square root of 38748551 is about 6224.8334114256. The cubic root of 38748551 is about 338.3907546232.

The spelling of 38748551 in words is "thirty-eight million, seven hundred forty-eight thousand, five hundred fifty-one".