61956101 has 2 divisors, whose sum is σ = 61956102. Its totient is φ = 61956100.

The previous prime is 61956071. The next prime is 61956107. The reversal of 61956101 is 10165916.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 59691076 + 2265025 = 7726^2 + 1505^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61956101 is a prime.

It is a super-2 number, since 2×61956101² = 7677116902244402, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61956107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30978050 + 30978051.

It is an arithmetic number, because the mean of its divisors is an integer number (30978051).

Almost surely, 2^61956101 is an apocalyptic number.

It is an amenable number.

61956101 is a deficient number, since it is larger than the sum of its proper divisors (1).

61956101 is an equidigital number, since it uses as much as digits as its factorization.

61956101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1620, while the sum is 29.

The square root of 61956101 is about 7871.2197911124. The cubic root of 61956101 is about 395.6957262868.

The spelling of 61956101 in words is "sixty-one million, nine hundred fifty-six thousand, one hundred one".