54151421 has 2 divisors, whose sum is σ = 54151422. Its totient is φ = 54151420.

The previous prime is 54151417. The next prime is 54151457. The reversal of 54151421 is 12415145.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 33120025 + 21031396 = 5755^2 + 4586^2 .

It is a cyclic number.

It is not a de Polignac number, because 54151421 - 2² = 54151417 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (54151411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27075710 + 27075711.

It is an arithmetic number, because the mean of its divisors is an integer number (27075711).

Almost surely, 2^54151421 is an apocalyptic number.

It is an amenable number.

54151421 is a deficient number, since it is larger than the sum of its proper divisors (1).

54151421 is an equidigital number, since it uses as much as digits as its factorization.

54151421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 800, while the sum is 23.

The square root of 54151421 is about 7358.7649099560. The cubic root of 54151421 is about 378.3292787877.

Adding to 54151421 its reverse (12415145), we get a palindrome (66566566).

The spelling of 54151421 in words is "fifty-four million, one hundred fifty-one thousand, four hundred twenty-one".