1055405047 has 4 divisors (see below), whose sum is σ = 1058063896. Its totient is φ = 1052746200.

The previous prime is 1055405041. The next prime is 1055405063. The reversal of 1055405047 is 7405045501.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1055405047 is a prime.

It is a super-2 number, since 2×1055405047² = 2227759626466144418, 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 (1055405041) 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, 1328829 + ... + 1329622.

It is an arithmetic number, because the mean of its divisors is an integer number (264515974).

Almost surely, 2^1055405047 is an apocalyptic number.

1055405047 is a deficient number, since it is larger than the sum of its proper divisors (2658849).

1055405047 is an equidigital number, since it uses as much as digits as its factorization.

1055405047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2658848.

The product of its (nonzero) digits is 14000, while the sum is 31.

The square root of 1055405047 is about 32486.9981223258. The cubic root of 1055405047 is about 1018.1373950444.

The spelling of 1055405047 in words is "one billion, fifty-five million, four hundred five thousand, forty-seven".