1072056557 has 8 divisors (see below), whose sum is σ = 1259479200. Its totient is φ = 899627760.

The previous prime is 1072056547. The next prime is 1072056563. The reversal of 1072056557 is 7556502701.

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 1072056557 - 2⁴ = 1072056541 is a prime.

It is a super-2 number, since 2×1072056557² = 2298610522813388498, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1072056557.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1072056527) 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 7 ways as a sum of consecutive naturals, for example, 3748307 + ... + 3748592.

It is an arithmetic number, because the mean of its divisors is an integer number (157434900).

Almost surely, 2^1072056557 is an apocalyptic number.

It is an amenable number.

1072056557 is a deficient number, since it is larger than the sum of its proper divisors (187422643).

1072056557 is a wasteful number, since it uses less digits than its factorization.

1072056557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7496923.

The product of its (nonzero) digits is 73500, while the sum is 38.

The square root of 1072056557 is about 32742.2747682564. The cubic root of 1072056557 is about 1023.4639875220.

The spelling of 1072056557 in words is "one billion, seventy-two million, fifty-six thousand, five hundred fifty-seven".