514624021 has 2 divisors, whose sum is σ = 514624022. Its totient is φ = 514624020.

The previous prime is 514624007. The next prime is 514624031. The reversal of 514624021 is 120426415.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 355511025 + 159112996 = 18855^2 + 12614^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-514624021 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (514624001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 257312010 + 257312011.

It is an arithmetic number, because the mean of its divisors is an integer number (257312011).

Almost surely, 2^514624021 is an apocalyptic number.

It is an amenable number.

514624021 is a deficient number, since it is larger than the sum of its proper divisors (1).

514624021 is an equidigital number, since it uses as much as digits as its factorization.

514624021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 514624021 is about 22685.3261162365. The cubic root of 514624021 is about 801.3643494696.

The spelling of 514624021 in words is "five hundred fourteen million, six hundred twenty-four thousand, twenty-one".