54691121 has 2 divisors, whose sum is σ = 54691122. Its totient is φ = 54691120.

The previous prime is 54691103. The next prime is 54691151. The reversal of 54691121 is 12119645.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 53816896 + 874225 = 7336^2 + 935^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-54691121 is a prime.

It is a super-2 number, since 2×54691121² = 5982237432473282, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (54691151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27345560 + 27345561.

It is an arithmetic number, because the mean of its divisors is an integer number (27345561).

Almost surely, 2^54691121 is an apocalyptic number.

It is an amenable number.

54691121 is a deficient number, since it is larger than the sum of its proper divisors (1).

54691121 is an equidigital number, since it uses as much as digits as its factorization.

54691121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2160, while the sum is 29.

The square root of 54691121 is about 7395.3445491066. The cubic root of 54691121 is about 379.5819988147.

The spelling of 54691121 in words is "fifty-four million, six hundred ninety-one thousand, one hundred twenty-one".