55142519 has 2 divisors, whose sum is σ = 55142520. Its totient is φ = 55142518.

The previous prime is 55142497. The next prime is 55142537. The reversal of 55142519 is 91524155.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 55142519 - 2¹² = 55138423 is a prime.

It is a super-2 number, since 2×55142519² = 6081394803330722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55142599) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27571259 + 27571260.

It is an arithmetic number, because the mean of its divisors is an integer number (27571260).

Almost surely, 2^55142519 is an apocalyptic number.

55142519 is a deficient number, since it is larger than the sum of its proper divisors (1).

55142519 is an equidigital number, since it uses as much as digits as its factorization.

55142519 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9000, while the sum is 32.

The square root of 55142519 is about 7425.8008995663. The cubic root of 55142519 is about 380.6234433533.

The spelling of 55142519 in words is "fifty-five million, one hundred forty-two thousand, five hundred nineteen".