551740730 has 32 divisors (see below), whose sum is σ = 1011966480. Its totient is φ = 216529920.

The previous prime is 551740711. The next prime is 551740733. The reversal of 551740730 is 37047155.

It can be written as a sum of positive squares in 8 ways, for example, as 168246841 + 383493889 = 12971^2 + 19583^2 .

It is a super-3 number, since 3×551740730³ (a number of 27 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (551740733) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 309602 + ... + 311378.

Almost surely, 2^551740730 is an apocalyptic number.

551740730 is a deficient number, since it is larger than the sum of its proper divisors (460225750).

551740730 is a wasteful number, since it uses less digits than its factorization.

551740730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2354.

The product of its (nonzero) digits is 14700, while the sum is 32.

The square root of 551740730 is about 23489.1619688741. The cubic root of 551740730 is about 820.1847343059.

Adding to 551740730 its reverse (37047155), we get a palindrome (588787885).

The spelling of 551740730 in words is "five hundred fifty-one million, seven hundred forty thousand, seven hundred thirty".