54957421 has 2 divisors, whose sum is σ = 54957422. Its totient is φ = 54957420.

The previous prime is 54957361. The next prime is 54957431. The reversal of 54957421 is 12475945.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 50055625 + 4901796 = 7075^2 + 2214^2 .

It is a cyclic number.

It is not a de Polignac number, because 54957421 - 2⁷ = 54957293 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 (54957431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27478710 + 27478711.

It is an arithmetic number, because the mean of its divisors is an integer number (27478711).

Almost surely, 2^54957421 is an apocalyptic number.

It is an amenable number.

54957421 is a deficient number, since it is larger than the sum of its proper divisors (1).

54957421 is an equidigital number, since it uses as much as digits as its factorization.

54957421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 50400, while the sum is 37.

The square root of 54957421 is about 7413.3272556930. The cubic root of 54957421 is about 380.1970838237.

It can be divided in two parts, 549 and 57421, that added together give a triangular number (57970 = T₃₄₀).

The spelling of 54957421 in words is "fifty-four million, nine hundred fifty-seven thousand, four hundred twenty-one".