55129694 has 4 divisors (see below), whose sum is σ = 82694544. Its totient is φ = 27564846.

The previous prime is 55129681. The next prime is 55129703. The reversal of 55129694 is 49692155.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 49692155 = 5 ⋅9938431.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13782422 + ... + 13782425.

It is an arithmetic number, because the mean of its divisors is an integer number (20673636).

Almost surely, 2^55129694 is an apocalyptic number.

55129694 is a deficient number, since it is larger than the sum of its proper divisors (27564850).

55129694 is a wasteful number, since it uses less digits than its factorization.

55129694 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27564849.

The product of its digits is 97200, while the sum is 41.

The square root of 55129694 is about 7424.9373061326. The cubic root of 55129694 is about 380.5939327068.

The spelling of 55129694 in words is "fifty-five million, one hundred twenty-nine thousand, six hundred ninety-four".