526498421 has 2 divisors, whose sum is σ = 526498422. Its totient is φ = 526498420.

The previous prime is 526498409. The next prime is 526498429. The reversal of 526498421 is 124894625.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 523906321 + 2592100 = 22889^2 + 1610^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-526498421 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (526498429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 263249210 + 263249211.

It is an arithmetic number, because the mean of its divisors is an integer number (263249211).

Almost surely, 2^526498421 is an apocalyptic number.

It is an amenable number.

526498421 is a deficient number, since it is larger than the sum of its proper divisors (1).

526498421 is an equidigital number, since it uses as much as digits as its factorization.

526498421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 138240, while the sum is 41.

The square root of 526498421 is about 22945.5534036554. The cubic root of 526498421 is about 807.4810845860.

The spelling of 526498421 in words is "five hundred twenty-six million, four hundred ninety-eight thousand, four hundred twenty-one".