15451651 has 2 divisors, whose sum is σ = 15451652. Its totient is φ = 15451650.

The previous prime is 15451649. The next prime is 15451661. The reversal of 15451651 is 15615451.

It is a happy number.

15451651 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 15451651 - 2¹ = 15451649 is a prime.

Together with 15451649, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (15451621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7725825 + 7725826.

It is an arithmetic number, because the mean of its divisors is an integer number (7725826).

Almost surely, 2^15451651 is an apocalyptic number.

15451651 is a deficient number, since it is larger than the sum of its proper divisors (1).

15451651 is an equidigital number, since it uses as much as digits as its factorization.

15451651 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3000, while the sum is 28.

The square root of 15451651 is about 3930.8588120155. The cubic root of 15451651 is about 249.0720317616.

The spelling of 15451651 in words is "fifteen million, four hundred fifty-one thousand, six hundred fifty-one".