55521463 has 2 divisors, whose sum is σ = 55521464. Its totient is φ = 55521462.

The previous prime is 55521443. The next prime is 55521467. The reversal of 55521463 is 36412555.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 55521463 - 2²¹ = 53424311 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55521467) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27760731 + 27760732.

It is an arithmetic number, because the mean of its divisors is an integer number (27760732).

Almost surely, 2^55521463 is an apocalyptic number.

55521463 is a deficient number, since it is larger than the sum of its proper divisors (1).

55521463 is an equidigital number, since it uses as much as digits as its factorization.

55521463 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18000, while the sum is 31.

The square root of 55521463 is about 7451.2725758759. The cubic root of 55521463 is about 381.4933457451.

The spelling of 55521463 in words is "fifty-five million, five hundred twenty-one thousand, four hundred sixty-three".