51029149 has 8 divisors (see below), whose sum is σ = 51557688. Its totient is φ = 50503680.

The previous prime is 51029137. The next prime is 51029161. The reversal of 51029149 is 94192015.

It is an interprime number because it is at equal distance from previous prime (51029137) and next prime (51029161).

It can be written as a sum of positive squares in 4 ways, for example, as 3667225 + 47361924 = 1915^2 + 6882^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 51029149 - 2¹⁷ = 50898077 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 51029149.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51029449) 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, 45969 + ... + 47065.

It is an arithmetic number, because the mean of its divisors is an integer number (6444711).

Almost surely, 2^51029149 is an apocalyptic number.

It is an amenable number.

51029149 is a deficient number, since it is larger than the sum of its proper divisors (528539).

51029149 is a wasteful number, since it uses less digits than its factorization.

51029149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1535.

The product of its (nonzero) digits is 3240, while the sum is 31.

The square root of 51029149 is about 7143.4689752249. The cubic root of 51029149 is about 370.9136151172.

The spelling of 51029149 in words is "fifty-one million, twenty-nine thousand, one hundred forty-nine".