551972 has 6 divisors (see below), whose sum is σ = 965958. Its totient is φ = 275984.

The previous prime is 551963. The next prime is 551981. The reversal of 551972 is 279155.

It is an interprime number because it is at equal distance from previous prime (551963) and next prime (551981).

It can be written as a sum of positive squares in only one way, i.e., 295936 + 256036 = 544^2 + 506^2 .

It is an unprimeable number.

551972 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68993 + ... + 69000.

It is an arithmetic number, because the mean of its divisors is an integer number (160993).

2⁵⁵¹⁹⁷² is an apocalyptic number.

It is an amenable number.

551972 is a deficient number, since it is larger than the sum of its proper divisors (413986).

551972 is a wasteful number, since it uses less digits than its factorization.

551972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137997 (or 137995 counting only the distinct ones).

The product of its digits is 3150, while the sum is 29.

The square root of 551972 is about 742.9481812347. The cubic root of 551972 is about 82.0299315676.

The spelling of 551972 in words is "five hundred fifty-one thousand, nine hundred seventy-two".