37251961 has 2 divisors, whose sum is σ = 37251962. Its totient is φ = 37251960.

The previous prime is 37251959. The next prime is 37251967. The reversal of 37251961 is 16915273.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26460736 + 10791225 = 5144^2 + 3285^2 .

It is an emirp because it is prime and its reverse (16915273) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 37251961 - 2¹ = 37251959 is a prime.

Together with 37251959, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (37251967) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18625980 + 18625981.

It is an arithmetic number, because the mean of its divisors is an integer number (18625981).

Almost surely, 2^37251961 is an apocalyptic number.

It is an amenable number.

37251961 is a deficient number, since it is larger than the sum of its proper divisors (1).

37251961 is an equidigital number, since it uses as much as digits as its factorization.

37251961 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11340, while the sum is 34.

The square root of 37251961 is about 6103.4384571322. The cubic root of 37251961 is about 333.9768620351.

The spelling of 37251961 in words is "thirty-seven million, two hundred fifty-one thousand, nine hundred sixty-one".