551503425 has 48 divisors (see below), whose sum is σ = 1013560128. Its totient is φ = 262329600.

The previous prime is 551503417. The next prime is 551503427. The reversal of 551503425 is 524305155.

It is a happy number.

It is not a de Polignac number, because 551503425 - 2³ = 551503417 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 551503392 and 551503401.

It is not an unprimeable number, because it can be changed into a prime (551503427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 37419 + ... + 50031.

It is an arithmetic number, because the mean of its divisors is an integer number (21115836).

Almost surely, 2^551503425 is an apocalyptic number.

551503425 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

551503425 is a deficient number, since it is larger than the sum of its proper divisors (462056703).

551503425 is a wasteful number, since it uses less digits than its factorization.

551503425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12690 (or 12685 counting only the distinct ones).

The product of its (nonzero) digits is 15000, while the sum is 30.

The square root of 551503425 is about 23484.1100533957. The cubic root of 551503425 is about 820.0671296421.

The spelling of 551503425 in words is "five hundred fifty-one million, five hundred three thousand, four hundred twenty-five".