51101205 has 8 divisors (see below), whose sum is σ = 81761952. Its totient is φ = 27253968.

The previous prime is 51101179. The next prime is 51101207. The reversal of 51101205 is 50210115.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 51101205 - 2¹⁴ = 51084821 is a prime.

It is a super-2 number, since 2×51101205² = 5222666304904050, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15), and also a Moran number because the ratio is a prime number: 3406747 = 51101205 / (5 + 1 + 1 + 0 + 1 + 2 + 0 + 5).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51101207) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1703359 + ... + 1703388.

It is an arithmetic number, because the mean of its divisors is an integer number (10220244).

Almost surely, 2^51101205 is an apocalyptic number.

It is an amenable number.

51101205 is a deficient number, since it is larger than the sum of its proper divisors (30660747).

51101205 is a wasteful number, since it uses less digits than its factorization.

51101205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3406755.

The product of its (nonzero) digits is 50, while the sum is 15.

The square root of 51101205 is about 7148.5106840516. The cubic root of 51101205 is about 371.0881165675.

The spelling of 51101205 in words is "fifty-one million, one hundred one thousand, two hundred five".