551300749 has 4 divisors (see below), whose sum is σ = 552087900. Its totient is φ = 550513600.

The previous prime is 551300707. The next prime is 551300767. The reversal of 551300749 is 947003155.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 305375625 + 245925124 = 17475^2 + 15682^2 .

It is a cyclic number.

It is not a de Polignac number, because 551300749 - 2¹⁹ = 550776461 is a prime.

It is a super-2 number, since 2×551300749² = 607865031695922002, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (551370749) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 392524 + ... + 393925.

It is an arithmetic number, because the mean of its divisors is an integer number (138021975).

Almost surely, 2^551300749 is an apocalyptic number.

It is an amenable number.

551300749 is a deficient number, since it is larger than the sum of its proper divisors (787151).

551300749 is an equidigital number, since it uses as much as digits as its factorization.

551300749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 787150.

The product of its (nonzero) digits is 18900, while the sum is 34.

The square root of 551300749 is about 23479.7944837684. The cubic root of 551300749 is about 819.9666598580.

It can be divided in two parts, 551300 and 749, that added together give a square (552049 = 743²).

The spelling of 551300749 in words is "five hundred fifty-one million, three hundred thousand, seven hundred forty-nine".