55051501481 has 2 divisors, whose sum is σ = 55051501482. Its totient is φ = 55051501480.

The previous prime is 55051501457. The next prime is 55051501529. The reversal of 55051501481 is 18410515055.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 48041625856 + 7009875625 = 219184^2 + 83725^2 .

It is a cyclic number.

It is not a de Polignac number, because 55051501481 - 2²² = 55047307177 is a prime.

It is a super-2 number, since 2×55051501481² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (55051501411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27525750740 + 27525750741.

It is an arithmetic number, because the mean of its divisors is an integer number (27525750741).

Almost surely, 2^55051501481 is an apocalyptic number.

It is an amenable number.

55051501481 is a deficient number, since it is larger than the sum of its proper divisors (1).

55051501481 is an equidigital number, since it uses as much as digits as its factorization.

55051501481 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20000, while the sum is 35.

The spelling of 55051501481 in words is "fifty-five billion, fifty-one million, five hundred one thousand, four hundred eighty-one".