551420513 has 12 divisors (see below), whose sum is σ = 632983680. Its totient is φ = 470562840.

The previous prime is 551420503. The next prime is 551420537. The reversal of 551420513 is 315024155.

It is not a de Polignac number, because 551420513 - 2⁸ = 551420257 is a prime.

It is not an unprimeable number, because it can be changed into a prime (551420503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 766568 + ... + 767286.

It is an arithmetic number, because the mean of its divisors is an integer number (52748640).

Almost surely, 2^551420513 is an apocalyptic number.

It is an amenable number.

551420513 is a deficient number, since it is larger than the sum of its proper divisors (81563167).

551420513 is an frugal number, since it uses more digits than its factorization.

551420513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1388 (or 1057 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 26.

The square root of 551420513 is about 23482.3447083122. The cubic root of 551420513 is about 820.0260317931.

Adding to 551420513 its reverse (315024155), we get a palindrome (866444668).

The spelling of 551420513 in words is "five hundred fifty-one million, four hundred twenty thousand, five hundred thirteen".