524666421 has 6 divisors (see below), whose sum is σ = 757851510. Its totient is φ = 349777608.

The previous prime is 524666411. The next prime is 524666431. The reversal of 524666421 is 124666425.

It is an interprime number because it is at equal distance from previous prime (524666411) and next prime (524666431).

It can be written as a sum of positive squares in only one way, i.e., 462035025 + 62631396 = 21495^2 + 7914^2 .

It is not a de Polignac number, because 524666421 - 2⁷ = 524666293 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (524666411) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 29148126 + ... + 29148143.

It is an arithmetic number, because the mean of its divisors is an integer number (126308585).

Almost surely, 2^524666421 is an apocalyptic number.

It is an amenable number.

524666421 is a deficient number, since it is larger than the sum of its proper divisors (233185089).

524666421 is a wasteful number, since it uses less digits than its factorization.

524666421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58296275 (or 58296272 counting only the distinct ones).

The product of its digits is 69120, while the sum is 36.

The square root of 524666421 is about 22905.5980275565. The cubic root of 524666421 is about 806.5434277918.

The spelling of 524666421 in words is "five hundred twenty-four million, six hundred sixty-six thousand, four hundred twenty-one".