551242501 has 4 divisors (see below), whose sum is σ = 551411712. Its totient is φ = 551073292.

The previous prime is 551242481. The next prime is 551242513. The reversal of 551242501 is 105242155.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 551242501 - 2²³ = 542853893 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (551245501) 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 3 ways as a sum of consecutive naturals, for example, 79621 + ... + 86266.

It is an arithmetic number, because the mean of its divisors is an integer number (137852928).

Almost surely, 2^551242501 is an apocalyptic number.

It is an amenable number.

551242501 is a deficient number, since it is larger than the sum of its proper divisors (169211).

551242501 is a wasteful number, since it uses less digits than its factorization.

551242501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169210.

The product of its (nonzero) digits is 2000, while the sum is 25.

The square root of 551242501 is about 23478.5540653593. The cubic root of 551242501 is about 819.9377808234.

Adding to 551242501 its reverse (105242155), we get a palindrome (656484656).

The spelling of 551242501 in words is "five hundred fifty-one million, two hundred forty-two thousand, five hundred one".