1551144057 has 16 divisors (see below), whose sum is σ = 2108617920. Its totient is φ = 1013909312.

The previous prime is 1551144047. The next prime is 1551144071. The reversal of 1551144057 is 7504411551.

It is a cyclic number.

It is not a de Polignac number, because 1551144057 - 2⁴ = 1551144041 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1551144047) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 372694 + ... + 376832.

It is an arithmetic number, because the mean of its divisors is an integer number (131788620).

Almost surely, 2^1551144057 is an apocalyptic number.

It is an amenable number.

1551144057 is a deficient number, since it is larger than the sum of its proper divisors (557473863).

1551144057 is a wasteful number, since it uses less digits than its factorization.

1551144057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6552.

The product of its (nonzero) digits is 14000, while the sum is 33.

The square root of 1551144057 is about 39384.5662284098. The cubic root of 1551144057 is about 1157.5791907655.

The spelling of 1551144057 in words is "one billion, five hundred fifty-one million, one hundred forty-four thousand, fifty-seven".