54377621 has 2 divisors, whose sum is σ = 54377622. Its totient is φ = 54377620.

The previous prime is 54377599. The next prime is 54377641. The reversal of 54377621 is 12677345.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 51638596 + 2739025 = 7186^2 + 1655^2 .

It is a cyclic number.

It is not a de Polignac number, because 54377621 - 2²² = 50183317 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (54377641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27188810 + 27188811.

It is an arithmetic number, because the mean of its divisors is an integer number (27188811).

Almost surely, 2^54377621 is an apocalyptic number.

It is an amenable number.

54377621 is a deficient number, since it is larger than the sum of its proper divisors (1).

54377621 is an equidigital number, since it uses as much as digits as its factorization.

54377621 is an evil number, because the sum of its binary digits is even.

The product of its digits is 35280, while the sum is 35.

The square root of 54377621 is about 7374.1183201790. The cubic root of 54377621 is about 378.8553296208.

The spelling of 54377621 in words is "fifty-four million, three hundred seventy-seven thousand, six hundred twenty-one".