552752781 has 24 divisors (see below), whose sum is σ = 871399584. Its totient is φ = 310675680.

The previous prime is 552752777. The next prime is 552752791. The reversal of 552752781 is 187257255.

It is not a de Polignac number, because 552752781 - 2² = 552752777 is a prime.

It is a super-2 number, since 2×552752781² = 611071273806467922, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (552752701) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 21855 + ... + 39788.

It is an arithmetic number, because the mean of its divisors is an integer number (36308316).

Almost surely, 2^552752781 is an apocalyptic number.

It is an amenable number.

552752781 is a deficient number, since it is larger than the sum of its proper divisors (318646803).

552752781 is a wasteful number, since it uses less digits than its factorization.

552752781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61721 (or 61714 counting only the distinct ones).

The product of its digits is 196000, while the sum is 42.

The square root of 552752781 is about 23510.6950343881. The cubic root of 552752781 is about 820.6859128026.

The spelling of 552752781 in words is "five hundred fifty-two million, seven hundred fifty-two thousand, seven hundred eighty-one".