424655551 has 4 divisors (see below), whose sum is σ = 426012592. Its totient is φ = 423298512.

The previous prime is 424655479. The next prime is 424655593. The reversal of 424655551 is 155556424.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 424655551 - 2⁷ = 424655423 is a prime.

It is a super-2 number, since 2×424655551² = 360664673990227202, which contains 22 as substring.

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 424655551.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (424655051) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 678051 + ... + 678676.

It is an arithmetic number, because the mean of its divisors is an integer number (106503148).

Almost surely, 2^424655551 is an apocalyptic number.

424655551 is a deficient number, since it is larger than the sum of its proper divisors (1357041).

424655551 is a wasteful number, since it uses less digits than its factorization.

424655551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1357040.

The product of its digits is 120000, while the sum is 37.

The square root of 424655551 is about 20607.1723193649. The cubic root of 424655551 is about 751.6441270871.

The spelling of 424655551 in words is "four hundred twenty-four million, six hundred fifty-five thousand, five hundred fifty-one".