551456531 has 4 divisors (see below), whose sum is σ = 560496864. Its totient is φ = 542416200.

The previous prime is 551456509. The next prime is 551456567. The reversal of 551456531 is 135654155.

551456531 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 551456531 - 2¹⁴ = 551440147 is a prime.

It is a super-2 number, since 2×551456531² = 608208611165107922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 551456491 and 551456500.

It is not an unprimeable number, because it can be changed into a prime (551456131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4520075 + ... + 4520196.

It is an arithmetic number, because the mean of its divisors is an integer number (140124216).

Almost surely, 2^551456531 is an apocalyptic number.

551456531 is a deficient number, since it is larger than the sum of its proper divisors (9040333).

551456531 is an equidigital number, since it uses as much as digits as its factorization.

551456531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9040332.

The product of its digits is 45000, while the sum is 35.

The square root of 551456531 is about 23483.1116123907. Note that the first 3 decimals coincide. The cubic root of 551456531 is about 820.0438857139.

The spelling of 551456531 in words is "five hundred fifty-one million, four hundred fifty-six thousand, five hundred thirty-one".