51089554 has 4 divisors (see below), whose sum is σ = 76634334. Its totient is φ = 25544776.

The previous prime is 51089551. The next prime is 51089557. The reversal of 51089554 is 45598015.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 45598015 = 5 ⋅9119603.

It is an interprime number because it is at equal distance from previous prime (51089551) and next prime (51089557).

It can be written as a sum of positive squares in only one way, i.e., 39000025 + 12089529 = 6245^2 + 3477^2 .

It is a super-2 number, since 2×51089554² = 5220285055837832, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51089551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12772387 + ... + 12772390.

Almost surely, 2^51089554 is an apocalyptic number.

51089554 is a deficient number, since it is larger than the sum of its proper divisors (25544780).

51089554 is a wasteful number, since it uses less digits than its factorization.

51089554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25544779.

The product of its (nonzero) digits is 36000, while the sum is 37.

The square root of 51089554 is about 7147.6957126056. The cubic root of 51089554 is about 371.0599119079.

The spelling of 51089554 in words is "fifty-one million, eighty-nine thousand, five hundred fifty-four".