551561707 has 8 divisors (see below), whose sum is σ = 559267632. Its totient is φ = 543900000.

The previous prime is 551561687. The next prime is 551561711. The reversal of 551561707 is 707165155.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-551561707 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (551561737) 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 7 ways as a sum of consecutive naturals, for example, 14473 + ... + 36229.

It is an arithmetic number, because the mean of its divisors is an integer number (69908454).

Almost surely, 2^551561707 is an apocalyptic number.

551561707 is a deficient number, since it is larger than the sum of its proper divisors (7705925).

551561707 is a wasteful number, since it uses less digits than its factorization.

551561707 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22109.

The product of its (nonzero) digits is 36750, while the sum is 37.

The square root of 551561707 is about 23485.3509022114. The cubic root of 551561707 is about 820.0960164188.

The spelling of 551561707 in words is "five hundred fifty-one million, five hundred sixty-one thousand, seven hundred seven".