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55100307 = 3102117989
BaseRepresentation
bin1101001000110…
…0001110010011
310211200101102010
43102030032103
5103101202212
65244554003
71236226203
oct322141623
9124611363
1055100307
1129114749
1216552903
13b552a42
147464403
154c8603c
hex348c393

55100307 has 8 divisors (see below), whose sum is σ = 73543120. Its totient is φ = 36695520.

The previous prime is 55100293. The next prime is 55100321. The reversal of 55100307 is 70300155.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (55100293) and next prime (55100321).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 55100307 - 212 = 55096211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55100407) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5932 + ... + 12057.

It is an arithmetic number, because the mean of its divisors is an integer number (9192890).

Almost surely, 255100307 is an apocalyptic number.

55100307 is a deficient number, since it is larger than the sum of its proper divisors (18442813).

55100307 is a wasteful number, since it uses less digits than its factorization.

55100307 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19013.

The product of its (nonzero) digits is 525, while the sum is 21.

The square root of 55100307 is about 7422.9581030745. The cubic root of 55100307 is about 380.5262952203.

The spelling of 55100307 in words is "fifty-five million, one hundred thousand, three hundred seven".

Divisors: 1 3 1021 3063 17989 53967 18366769 55100307