428540051 has 2 divisors, whose sum is σ = 428540052. Its totient is φ = 428540050.

The previous prime is 428540009. The next prime is 428540087. The reversal of 428540051 is 150045824.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 428540051 - 2⁶ = 428539987 is a prime.

It is a super-2 number, since 2×428540051² = 367293150622165202, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 428539996 and 428540023.

It is not a weakly prime, because it can be changed into another prime (428540551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 214270025 + 214270026.

It is an arithmetic number, because the mean of its divisors is an integer number (214270026).

Almost surely, 2^428540051 is an apocalyptic number.

428540051 is a deficient number, since it is larger than the sum of its proper divisors (1).

428540051 is an equidigital number, since it uses as much as digits as its factorization.

428540051 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6400, while the sum is 29.

The square root of 428540051 is about 20701.2089260507. The cubic root of 428540051 is about 753.9290407603.

Adding to 428540051 its reverse (150045824), we get a palindrome (578585875).

The spelling of 428540051 in words is "four hundred twenty-eight million, five hundred forty thousand, fifty-one".