2061151237 has 4 divisors (see below), whose sum is σ = 2073065580. Its totient is φ = 2049236896.

The previous prime is 2061151177. The next prime is 2061151243. The reversal of 2061151237 is 7321511602.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1035166276 + 1025984961 = 32174^2 + 32031^2 .

It is a cyclic number.

It is not a de Polignac number, because 2061151237 - 2⁷ = 2061151109 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2061152237) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5956912 + ... + 5957257.

It is an arithmetic number, because the mean of its divisors is an integer number (518266395).

Almost surely, 2^2061151237 is an apocalyptic number.

It is an amenable number.

2061151237 is a deficient number, since it is larger than the sum of its proper divisors (11914343).

2061151237 is a wasteful number, since it uses less digits than its factorization.

2061151237 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11914342.

The product of its (nonzero) digits is 2520, while the sum is 28.

The square root of 2061151237 is about 45399.9034910869. The cubic root of 2061151237 is about 1272.6333103864.

Adding to 2061151237 its reverse (7321511602), we get a palindrome (9382662839).

The spelling of 2061151237 in words is "two billion, sixty-one million, one hundred fifty-one thousand, two hundred thirty-seven".