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55473421 is a prime number
BaseRepresentation
bin1101001110011…
…1010100001101
310212101100020011
43103213110031
5103200122141
65300553221
71242342043
oct323472415
9125340204
1055473421
112934a003
12166b2811
13b653813
147520393
154d0b881
hex34e750d

55473421 has 2 divisors, whose sum is σ = 55473422. Its totient is φ = 55473420.

The previous prime is 55473413. The next prime is 55473437. The reversal of 55473421 is 12437455.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 52272900 + 3200521 = 7230^2 + 1789^2 .

It is a cyclic number.

It is not a de Polignac number, because 55473421 - 23 = 55473413 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55474421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27736710 + 27736711.

It is an arithmetic number, because the mean of its divisors is an integer number (27736711).

Almost surely, 255473421 is an apocalyptic number.

It is an amenable number.

55473421 is a deficient number, since it is larger than the sum of its proper divisors (1).

55473421 is an equidigital number, since it uses as much as digits as its factorization.

55473421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 16800, while the sum is 31.

The square root of 55473421 is about 7448.0481335716. The cubic root of 55473421 is about 381.3832802491.

The spelling of 55473421 in words is "fifty-five million, four hundred seventy-three thousand, four hundred twenty-one".