428524551 has 36 divisors (see below), whose sum is σ = 775435752. Its totient is φ = 226031904.

The previous prime is 428524549. The next prime is 428524553. The reversal of 428524551 is 155425824.

428524551 is a `hidden beast` number, since 4 + 2 + 85 + 24 + 551 = 666.

It is an interprime number because it is at equal distance from previous prime (428524549) and next prime (428524553).

It is not a de Polignac number, because 428524551 - 2¹ = 428524549 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428524553) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 31641 + ... + 43106.

It is an arithmetic number, because the mean of its divisors is an integer number (21539882).

Almost surely, 2^428524551 is an apocalyptic number.

428524551 is a deficient number, since it is larger than the sum of its proper divisors (346911201).

428524551 is a wasteful number, since it uses less digits than its factorization.

428524551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74780 (or 74770 counting only the distinct ones).

The product of its digits is 64000, while the sum is 36.

The square root of 428524551 is about 20700.8345483944. The cubic root of 428524551 is about 753.9199509518.

The spelling of 428524551 in words is "four hundred twenty-eight million, five hundred twenty-four thousand, five hundred fifty-one".