521245051 has 2 divisors, whose sum is σ = 521245052. Its totient is φ = 521245050.

The previous prime is 521245037. The next prime is 521245079. The reversal of 521245051 is 150542125.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 521245051 - 2²⁷ = 387027323 is a prime.

It is not a weakly prime, because it can be changed into another prime (521245001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 260622525 + 260622526.

It is an arithmetic number, because the mean of its divisors is an integer number (260622526).

Almost surely, 2^521245051 is an apocalyptic number.

521245051 is a deficient number, since it is larger than the sum of its proper divisors (1).

521245051 is an equidigital number, since it uses as much as digits as its factorization.

521245051 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2000, while the sum is 25.

The square root of 521245051 is about 22830.7917295919. The cubic root of 521245051 is about 804.7864361523.

Adding to 521245051 its reverse (150542125), we get a palindrome (671787176).

It can be divided in two parts, 52124 and 5051, that added together give a palindrome (57175).

The spelling of 521245051 in words is "five hundred twenty-one million, two hundred forty-five thousand, fifty-one".