1553401343 has 4 divisors (see below), whose sum is σ = 1672893768. Its totient is φ = 1433908920.

The previous prime is 1553401337. The next prime is 1553401361. The reversal of 1553401343 is 3431043551.

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 1553401343 - 2¹² = 1553397247 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1553401043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 59746193 + ... + 59746218.

It is an arithmetic number, because the mean of its divisors is an integer number (418223442).

Almost surely, 2^1553401343 is an apocalyptic number.

1553401343 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1553401343 is a deficient number, since it is larger than the sum of its proper divisors (119492425).

1553401343 is a wasteful number, since it uses less digits than its factorization.

1553401343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119492424.

The product of its (nonzero) digits is 10800, while the sum is 29.

The square root of 1553401343 is about 39413.2127972334. The cubic root of 1553401343 is about 1158.1404368999.

Adding to 1553401343 its reverse (3431043551), we get a palindrome (4984444894).

The spelling of 1553401343 in words is "one billion, five hundred fifty-three million, four hundred one thousand, three hundred forty-three".