1355617420 has 36 divisors (see below), whose sum is σ = 2881801440. Its totient is φ = 535659424.

The previous prime is 1355617409. The next prime is 1355617423. The reversal of 1355617420 is 247165531.

It is not an unprimeable number, because it can be changed into a prime (1355617423) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 132861 + ... + 142699.

It is an arithmetic number, because the mean of its divisors is an integer number (80050040).

Almost surely, 2^1355617420 is an apocalyptic number.

1355617420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1355617420 is an abundant number, since it is smaller than the sum of its proper divisors (1526184020).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1355617420 is an equidigital number, since it uses as much as digits as its factorization.

1355617420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10014 (or 9929 counting only the distinct ones).

The product of its (nonzero) digits is 25200, while the sum is 34.

The square root of 1355617420 is about 36818.7101892502. The cubic root of 1355617420 is about 1106.7402728820.

It can be divided in two parts, 13556 and 17420, that added together give a square (30976 = 176²).

The spelling of 1355617420 in words is "one billion, three hundred fifty-five million, six hundred seventeen thousand, four hundred twenty".