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61323249 = 3134138351
BaseRepresentation
bin1110100111101…
…1011111110001
311021101112200110
43221323133301
5111144320444
610030211533
71343144661
oct351733761
9137345613
1061323249
1131685079
1218653ba9
13c921360
1482041a1
1555b4cb9
hex3a7b7f1

61323249 has 16 divisors (see below), whose sum is σ = 90203904. Its totient is φ = 36816000.

The previous prime is 61323247. The next prime is 61323253. The reversal of 61323249 is 94232316.

It is not a de Polignac number, because 61323249 - 21 = 61323247 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61323247) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17577 + ... + 20774.

It is an arithmetic number, because the mean of its divisors is an integer number (5637744).

Almost surely, 261323249 is an apocalyptic number.

It is an amenable number.

61323249 is a deficient number, since it is larger than the sum of its proper divisors (28880655).

61323249 is a wasteful number, since it uses less digits than its factorization.

61323249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38408.

The product of its digits is 7776, while the sum is 30.

The square root of 61323249 is about 7830.9162299184. The cubic root of 61323249 is about 394.3438318065.

The spelling of 61323249 in words is "sixty-one million, three hundred twenty-three thousand, two hundred forty-nine".

Divisors: 1 3 13 39 41 123 533 1599 38351 115053 498563 1495689 1572391 4717173 20441083 61323249