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51054649 is a prime number
BaseRepresentation
bin1100001011000…
…0100000111001
310120001211210221
43002300200321
5101032222044
65022140041
71156646242
oct302604071
9116054727
1051054649
1126901128
1215121621
13a767469
146acdcc9
154737484
hex30b0839

51054649 has 2 divisors, whose sum is σ = 51054650. Its totient is φ = 51054648.

The previous prime is 51054629. The next prime is 51054659. The reversal of 51054649 is 94645015.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 50865424 + 189225 = 7132^2 + 435^2 .

It is a cyclic number.

It is not a de Polignac number, because 51054649 - 25 = 51054617 is a prime.

It is not a weakly prime, because it can be changed into another prime (51054629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25527324 + 25527325.

It is an arithmetic number, because the mean of its divisors is an integer number (25527325).

Almost surely, 251054649 is an apocalyptic number.

It is an amenable number.

51054649 is a deficient number, since it is larger than the sum of its proper divisors (1).

51054649 is an equidigital number, since it uses as much as digits as its factorization.

51054649 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21600, while the sum is 34.

The square root of 51054649 is about 7145.2535994183. The cubic root of 51054649 is about 370.9753884522.

The spelling of 51054649 in words is "fifty-one million, fifty-four thousand, six hundred forty-nine".