51670101 has 16 divisors (see below), whose sum is σ = 82880000. Its totient is φ = 27971568.

The previous prime is 51670097. The next prime is 51670103. The reversal of 51670101 is 10107615.

It is not a de Polignac number, because 51670101 - 2² = 51670097 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51670103) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 64351 + ... + 65148.

It is an arithmetic number, because the mean of its divisors is an integer number (5180000).

Almost surely, 2^51670101 is an apocalyptic number.

It is an amenable number.

51670101 is a deficient number, since it is larger than the sum of its proper divisors (31209899).

51670101 is a wasteful number, since it uses less digits than its factorization.

51670101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129528.

The product of its (nonzero) digits is 210, while the sum is 21.

The square root of 51670101 is about 7188.1917754050. The cubic root of 51670101 is about 372.4601125405.

Adding to 51670101 its reverse (10107615), we get a palindrome (61777716).

The spelling of 51670101 in words is "fifty-one million, six hundred seventy thousand, one hundred one".