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49771961 = 972631951
BaseRepresentation
bin1011110111011…
…1010110111001
310110122200021222
42331313112321
5100220200321
64534441425
71143024521
oct275672671
9113580258
1049771961
1126105458
1214803275
13a408685
146878681
1545823ab
hex2f775b9

49771961 has 8 divisors (see below), whose sum is σ = 50502144. Its totient is φ = 49046400.

The previous prime is 49771951. The next prime is 49771973. The reversal of 49771961 is 16917794.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-49771961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (49771901) 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, 24536 + ... + 26486.

It is an arithmetic number, because the mean of its divisors is an integer number (6312768).

Almost surely, 249771961 is an apocalyptic number.

It is an amenable number.

49771961 is a deficient number, since it is larger than the sum of its proper divisors (730183).

49771961 is a wasteful number, since it uses less digits than its factorization.

49771961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2311.

The product of its digits is 95256, while the sum is 44.

The square root of 49771961 is about 7054.9245920846. The cubic root of 49771961 is about 367.8422276776.

The spelling of 49771961 in words is "forty-nine million, seven hundred seventy-one thousand, nine hundred sixty-one".

Divisors: 1 97 263 1951 25511 189247 513113 49771961