61002541 has 2 divisors, whose sum is σ = 61002542. Its totient is φ = 61002540.

The previous prime is 61002533. The next prime is 61002553. The reversal of 61002541 is 14520016.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 58293225 + 2709316 = 7635^2 + 1646^2 .

It is a cyclic number.

It is not a de Polignac number, because 61002541 - 2³ = 61002533 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61002041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30501270 + 30501271.

It is an arithmetic number, because the mean of its divisors is an integer number (30501271).

Almost surely, 2^61002541 is an apocalyptic number.

It is an amenable number.

61002541 is a deficient number, since it is larger than the sum of its proper divisors (1).

61002541 is an equidigital number, since it uses as much as digits as its factorization.

61002541 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 61002541 is about 7810.4123450686. The cubic root of 61002541 is about 393.6551841575.

Adding to 61002541 its reverse (14520016), we get a palindrome (75522557).

It can be divided in two parts, 6 and 1002541, that multiplied together give a triangular number (6015246 = T₃₄₆₈).

The spelling of 61002541 in words is "sixty-one million, two thousand, five hundred forty-one".