1551052043 has 4 divisors (see below), whose sum is σ = 1551140448. Its totient is φ = 1550963640.

The previous prime is 1551052033. The next prime is 1551052073. The reversal of 1551052043 is 3402501551.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 1551052043 - 2²⁰ = 1550003467 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1551052033) 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, 8003 + ... + 56268.

It is an arithmetic number, because the mean of its divisors is an integer number (387785112).

Almost surely, 2^1551052043 is an apocalyptic number.

1551052043 is a deficient number, since it is larger than the sum of its proper divisors (88405).

1551052043 is an equidigital number, since it uses as much as digits as its factorization.

1551052043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88404.

The product of its (nonzero) digits is 3000, while the sum is 26.

The square root of 1551052043 is about 39383.3980631433. The cubic root of 1551052043 is about 1157.5563010803.

Adding to 1551052043 its reverse (3402501551), we get a palindrome (4953553594).

The spelling of 1551052043 in words is "one billion, five hundred fifty-one million, fifty-two thousand, forty-three".