552494781 has 24 divisors (see below), whose sum is σ = 853220160. Its totient is φ = 343287936.

The previous prime is 552494771. The next prime is 552494791. The reversal of 552494781 is 187494255.

552494781 is a `hidden beast` number, since 5 + 524 + 9 + 47 + 81 = 666.

It is an interprime number because it is at equal distance from previous prime (552494771) and next prime (552494791).

It is not a de Polignac number, because 552494781 - 2⁷ = 552494653 is a prime.

It is a super-2 number, since 2×552494781² = 610500966064475922, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (552494771) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1771 + ... + 33288.

It is an arithmetic number, because the mean of its divisors is an integer number (35550840).

Almost surely, 2^552494781 is an apocalyptic number.

552494781 is a gapful number since it is divisible by the number (51) formed by its first and last digit.

It is an amenable number.

552494781 is a deficient number, since it is larger than the sum of its proper divisors (300725379).

552494781 is a wasteful number, since it uses less digits than its factorization.

552494781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35185 (or 35182 counting only the distinct ones).

The product of its digits is 403200, while the sum is 45.

The square root of 552494781 is about 23505.2075293965. The cubic root of 552494781 is about 820.5582065752.

The spelling of 552494781 in words is "five hundred fifty-two million, four hundred ninety-four thousand, seven hundred eighty-one".