1424855557 has 4 divisors (see below), whose sum is σ = 1440865260. Its totient is φ = 1408845856.

The previous prime is 1424855539. The next prime is 1424855569. The reversal of 1424855557 is 7555584241.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7555584241 = 367 ⋅20587423.

It can be written as a sum of positive squares in 2 ways, for example, as 185885956 + 1238969601 = 13634^2 + 35199^2 .

It is a cyclic number.

It is not a de Polignac number, because 1424855557 - 2²³ = 1416466949 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1424855587) 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, 8004718 + ... + 8004895.

It is an arithmetic number, because the mean of its divisors is an integer number (360216315).

Almost surely, 2^1424855557 is an apocalyptic number.

It is an amenable number.

1424855557 is a deficient number, since it is larger than the sum of its proper divisors (16009703).

1424855557 is an equidigital number, since it uses as much as digits as its factorization.

1424855557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16009702.

The product of its digits is 1120000, while the sum is 46.

The square root of 1424855557 is about 37747.2589335968. The cubic root of 1424855557 is about 1125.2705343125.

The spelling of 1424855557 in words is "one billion, four hundred twenty-four million, eight hundred fifty-five thousand, five hundred fifty-seven".