1055621767 has 2 divisors, whose sum is σ = 1055621768. Its totient is φ = 1055621766.

The previous prime is 1055621761. The next prime is 1055621789. The reversal of 1055621767 is 7671265501.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1055621767 - 2¹⁵ = 1055588999 is a prime.

It is a super-2 number, since 2×1055621767² = 2228674629928404578, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1055621761) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 527810883 + 527810884.

It is an arithmetic number, because the mean of its divisors is an integer number (527810884).

Almost surely, 2^1055621767 is an apocalyptic number.

1055621767 is a deficient number, since it is larger than the sum of its proper divisors (1).

1055621767 is an equidigital number, since it uses as much as digits as its factorization.

1055621767 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 88200, while the sum is 40.

The square root of 1055621767 is about 32490.3334393478. Note that the first 3 decimals coincide. The cubic root of 1055621767 is about 1018.2070793915.

It can be divided in two parts, 10556 and 21767, that added together give a palindrome (32323).

The spelling of 1055621767 in words is "one billion, fifty-five million, six hundred twenty-one thousand, seven hundred sixty-seven".