1553157143 has 8 divisors (see below), whose sum is σ = 1577352000. Its totient is φ = 1529075808.

The previous prime is 1553157131. The next prime is 1553157157. The reversal of 1553157143 is 3417513551.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1553157143 - 2¹² = 1553153047 is a prime.

It is a super-2 number, since 2×1553157143² = 4824594221703844898, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1553157343) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 596 + ... + 55737.

It is an arithmetic number, because the mean of its divisors is an integer number (197169000).

Almost surely, 2^1553157143 is an apocalyptic number.

1553157143 is a deficient number, since it is larger than the sum of its proper divisors (24194857).

1553157143 is an equidigital number, since it uses as much as digits as its factorization.

1553157143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56761.

The product of its digits is 31500, while the sum is 35.

The square root of 1553157143 is about 39410.1147295970. The cubic root of 1553157143 is about 1158.0797458413.

The spelling of 1553157143 in words is "one billion, five hundred fifty-three million, one hundred fifty-seven thousand, one hundred forty-three".