61972201 has 2 divisors, whose sum is σ = 61972202. Its totient is φ = 61972200.

The previous prime is 61972181. The next prime is 61972219. The reversal of 61972201 is 10227916.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 38440000 + 23532201 = 6200^2 + 4851^2 .

It is a cyclic number.

It is not a de Polignac number, because 61972201 - 2¹⁹ = 61447913 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 61972201.

It is not a weakly prime, because it can be changed into another prime (61972271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30986100 + 30986101.

It is an arithmetic number, because the mean of its divisors is an integer number (30986101).

Almost surely, 2^61972201 is an apocalyptic number.

It is an amenable number.

61972201 is a deficient number, since it is larger than the sum of its proper divisors (1).

61972201 is an equidigital number, since it uses as much as digits as its factorization.

61972201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1512, while the sum is 28.

The square root of 61972201 is about 7872.2424378318. The cubic root of 61972201 is about 395.7299986686.

The spelling of 61972201 in words is "sixty-one million, nine hundred seventy-two thousand, two hundred one".