424212551 has 24 divisors (see below), whose sum is σ = 512370720. Its totient is φ = 349780032.

The previous prime is 424212539. The next prime is 424212589. The reversal of 424212551 is 155212424.

It is not a de Polignac number, because 424212551 - 2¹⁰ = 424211527 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 424212551.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (424212251) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 691721 + ... + 692333.

It is an arithmetic number, because the mean of its divisors is an integer number (21348780).

Almost surely, 2^424212551 is an apocalyptic number.

424212551 is a deficient number, since it is larger than the sum of its proper divisors (88158169).

424212551 is a wasteful number, since it uses less digits than its factorization.

424212551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1143 (or 1136 counting only the distinct ones).

The product of its digits is 3200, while the sum is 26.

The square root of 424212551 is about 20596.4208298432. The cubic root of 424212551 is about 751.3826648250.

Adding to 424212551 its reverse (155212424), we get a palindrome (579424975).

The spelling of 424212551 in words is "four hundred twenty-four million, two hundred twelve thousand, five hundred fifty-one".