61415541 has 12 divisors (see below), whose sum is σ = 96776160. Its totient is φ = 37221480.

The previous prime is 61415527. The next prime is 61415573. The reversal of 61415541 is 14551416.

61415541 is a `hidden beast` number, since 614 + 1 + 5 + 5 + 41 = 666.

It is not a de Polignac number, because 61415541 - 2⁷ = 61415413 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61415521) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 310081 + ... + 310278.

It is an arithmetic number, because the mean of its divisors is an integer number (8064680).

Almost surely, 2^61415541 is an apocalyptic number.

It is an amenable number.

61415541 is a deficient number, since it is larger than the sum of its proper divisors (35360619).

61415541 is a wasteful number, since it uses less digits than its factorization.

61415541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 620376 (or 620373 counting only the distinct ones).

The product of its digits is 2400, while the sum is 27.

The square root of 61415541 is about 7836.8068114507. The cubic root of 61415541 is about 394.5415628934.

Adding to 61415541 its reverse (14551416), we get a palindrome (75966957).

The spelling of 61415541 in words is "sixty-one million, four hundred fifteen thousand, five hundred forty-one".