54421537 has 2 divisors, whose sum is σ = 54421538. Its totient is φ = 54421536.

The previous prime is 54421501. The next prime is 54421547. The reversal of 54421537 is 73512445.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 53567761 + 853776 = 7319^2 + 924^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-54421537 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 54421499 and 54421508.

It is not a weakly prime, because it can be changed into another prime (54421547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27210768 + 27210769.

It is an arithmetic number, because the mean of its divisors is an integer number (27210769).

Almost surely, 2^54421537 is an apocalyptic number.

It is an amenable number.

54421537 is a deficient number, since it is larger than the sum of its proper divisors (1).

54421537 is an equidigital number, since it uses as much as digits as its factorization.

54421537 is an evil number, because the sum of its binary digits is even.

The product of its digits is 16800, while the sum is 31.

The square root of 54421537 is about 7377.0954311301. The cubic root of 54421537 is about 378.9572915026.

The spelling of 54421537 in words is "fifty-four million, four hundred twenty-one thousand, five hundred thirty-seven".