55138051 has 2 divisors, whose sum is σ = 55138052. Its totient is φ = 55138050.

The previous prime is 55138033. The next prime is 55138067. The reversal of 55138051 is 15083155.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 55138051 - 2¹⁷ = 55006979 is a prime.

It is a Chen prime.

It is the 7426-th Hogben number.

It is not a weakly prime, because it can be changed into another prime (55138091) by changing a digit.

It is a nontrivial repunit in base 7425.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27569025 + 27569026.

It is an arithmetic number, because the mean of its divisors is an integer number (27569026).

Almost surely, 2^55138051 is an apocalyptic number.

55138051 is a deficient number, since it is larger than the sum of its proper divisors (1).

55138051 is an equidigital number, since it uses as much as digits as its factorization.

55138051 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3000, while the sum is 28.

The square root of 55138051 is about 7425.5000505016. The cubic root of 55138051 is about 380.6131628927.

The spelling of 55138051 in words is "fifty-five million, one hundred thirty-eight thousand, fifty-one".