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630255455 = 510310311187
BaseRepresentation
bin100101100100001…
…110111101011111
31121220221021221122
4211210032331133
52242321133310
6142312321155
721422040314
oct4544167537
91556837848
10630255455
112a3843285
121570a31bb
13a075cc2b
145d9c0d0b
153a4e7555
hex2590ef5f

630255455 has 16 divisors (see below), whose sum is σ = 765033984. Its totient is φ = 498404640.

The previous prime is 630255419. The next prime is 630255469. The reversal of 630255455 is 554552036.

It is not a de Polignac number, because 630255455 - 216 = 630189919 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 530372 + ... + 531558.

It is an arithmetic number, because the mean of its divisors is an integer number (47814624).

Almost surely, 2630255455 is an apocalyptic number.

630255455 is a deficient number, since it is larger than the sum of its proper divisors (134778529).

630255455 is a wasteful number, since it uses less digits than its factorization.

630255455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2326.

The product of its (nonzero) digits is 90000, while the sum is 35.

The square root of 630255455 is about 25104.8890656780. The cubic root of 630255455 is about 857.3777412700.

The spelling of 630255455 in words is "six hundred thirty million, two hundred fifty-five thousand, four hundred fifty-five".

Divisors: 1 5 103 515 1031 1187 5155 5935 106193 122261 530965 611305 1223797 6118985 126051091 630255455