53451551 has 2 divisors, whose sum is σ = 53451552. Its totient is φ = 53451550.

The previous prime is 53451527. The next prime is 53451557. The reversal of 53451551 is 15515435.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 53451551 - 2⁶ = 53451487 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53451557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26725775 + 26725776.

It is an arithmetic number, because the mean of its divisors is an integer number (26725776).

Almost surely, 2^53451551 is an apocalyptic number.

53451551 is a deficient number, since it is larger than the sum of its proper divisors (1).

53451551 is an equidigital number, since it uses as much as digits as its factorization.

53451551 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7500, while the sum is 29.

The square root of 53451551 is about 7311.0567635602. The cubic root of 53451551 is about 376.6923240239.

Adding to 53451551 its reverse (15515435), we get a palindrome (68966986).

The spelling of 53451551 in words is "fifty-three million, four hundred fifty-one thousand, five hundred fifty-one".