551616974 has 4 divisors (see below), whose sum is σ = 827425464. Its totient is φ = 275808486.

The previous prime is 551616971. The next prime is 551617013. The reversal of 551616974 is 479616155.

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

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (551616971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 137904242 + ... + 137904245.

It is an arithmetic number, because the mean of its divisors is an integer number (206856366).

Almost surely, 2^551616974 is an apocalyptic number.

551616974 is a deficient number, since it is larger than the sum of its proper divisors (275808490).

551616974 is a wasteful number, since it uses less digits than its factorization.

551616974 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 275808489.

The product of its digits is 226800, while the sum is 44.

The square root of 551616974 is about 23486.5274998242. The cubic root of 551616974 is about 820.1234069671.

The spelling of 551616974 in words is "five hundred fifty-one million, six hundred sixteen thousand, nine hundred seventy-four".