1055626139 has 4 divisors (see below), whose sum is σ = 1081373160. Its totient is φ = 1029879120.

The previous prime is 1055626133. The next prime is 1055626141. The reversal of 1055626139 is 9316265501.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9316265501 = 8467 ⋅1100303.

It is a cyclic number.

It is not a de Polignac number, because 1055626139 - 2⁴ = 1055626123 is a prime.

It is a super-2 number, since 2×1055626139² = 2228693090680094642, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1055626133) 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, 12873449 + ... + 12873530.

It is an arithmetic number, because the mean of its divisors is an integer number (270343290).

Almost surely, 2^1055626139 is an apocalyptic number.

1055626139 is a deficient number, since it is larger than the sum of its proper divisors (25747021).

1055626139 is an equidigital number, since it uses as much as digits as its factorization.

1055626139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25747020.

The product of its (nonzero) digits is 48600, while the sum is 38.

The square root of 1055626139 is about 32490.4007208283. The cubic root of 1055626139 is about 1018.2084850702.

The spelling of 1055626139 in words is "one billion, fifty-five million, six hundred twenty-six thousand, one hundred thirty-nine".