526343621 has 2 divisors, whose sum is σ = 526343622. Its totient is φ = 526343620.

The previous prime is 526343603. The next prime is 526343627. The reversal of 526343621 is 126343625.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 287980900 + 238362721 = 16970^2 + 15439^2 .

It is a cyclic number.

It is not a de Polignac number, because 526343621 - 2¹⁸ = 526081477 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (526343627) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 263171810 + 263171811.

It is an arithmetic number, because the mean of its divisors is an integer number (263171811).

Almost surely, 2^526343621 is an apocalyptic number.

It is an amenable number.

526343621 is a deficient number, since it is larger than the sum of its proper divisors (1).

526343621 is an equidigital number, since it uses as much as digits as its factorization.

526343621 is an evil number, because the sum of its binary digits is even.

The product of its digits is 25920, while the sum is 32.

The square root of 526343621 is about 22942.1799530908. The cubic root of 526343621 is about 807.4019388441.

It can be divided in two parts, 5263 and 43621, that added together give a palindrome (48884).

The spelling of 526343621 in words is "five hundred twenty-six million, three hundred forty-three thousand, six hundred twenty-one".