1055978047 has 16 divisors (see below), whose sum is σ = 1146689280. Its totient is φ = 969800832.

The previous prime is 1055978023. The next prime is 1055978051. The reversal of 1055978047 is 7408795501.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1055978047 - 2¹⁵ = 1055945279 is a prime.

It is a super-2 number, since 2×1055978047² = 2230179271491868418, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1055977988 and 1055978006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1055973047) 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, 49303 + ... + 67399.

It is an arithmetic number, because the mean of its divisors is an integer number (71668080).

Almost surely, 2^1055978047 is an apocalyptic number.

1055978047 is a deficient number, since it is larger than the sum of its proper divisors (90711233).

1055978047 is a wasteful number, since it uses less digits than its factorization.

1055978047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18222.

The product of its (nonzero) digits is 352800, while the sum is 46.

The square root of 1055978047 is about 32495.8158383506. The cubic root of 1055978047 is about 1018.3216172639.

The spelling of 1055978047 in words is "one billion, fifty-five million, nine hundred seventy-eight thousand, forty-seven".