51557119 has 6 divisors (see below), whose sum is σ = 51918200. Its totient is φ = 51197256.

The previous prime is 51557113. The next prime is 51557153. The reversal of 51557119 is 91175515.

It is a happy number.

It is not a de Polignac number, because 51557119 - 2³ = 51557111 is a prime.

It is a super-2 number, since 2×51557119² = 5316273039160322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51557111) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 101037 + ... + 101545.

Almost surely, 2^51557119 is an apocalyptic number.

51557119 is a deficient number, since it is larger than the sum of its proper divisors (361081).

51557119 is an frugal number, since it uses more digits than its factorization.

51557119 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1217 (or 708 counting only the distinct ones).

The product of its digits is 7875, while the sum is 34.

The square root of 51557119 is about 7180.3286136499. The cubic root of 51557119 is about 372.1884402928.

The spelling of 51557119 in words is "fifty-one million, five hundred fifty-seven thousand, one hundred nineteen".