61532101 has 2 divisors, whose sum is σ = 61532102. Its totient is φ = 61532100.

The previous prime is 61532087. The next prime is 61532123. The reversal of 61532101 is 10123516.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 40132225 + 21399876 = 6335^2 + 4626^2 .

It is a cyclic number.

It is not a de Polignac number, because 61532101 - 2¹³ = 61523909 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61532131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30766050 + 30766051.

It is an arithmetic number, because the mean of its divisors is an integer number (30766051).

Almost surely, 2^61532101 is an apocalyptic number.

It is an amenable number.

61532101 is a deficient number, since it is larger than the sum of its proper divisors (1).

61532101 is an equidigital number, since it uses as much as digits as its factorization.

61532101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 180, while the sum is 19.

The square root of 61532101 is about 7844.2399886796. The cubic root of 61532101 is about 394.7910041108.

Adding to 61532101 its reverse (10123516), we get a palindrome (71655617).

The spelling of 61532101 in words is "sixty-one million, five hundred thirty-two thousand, one hundred one".