61525541 has 16 divisors (see below), whose sum is σ = 76930560. Its totient is φ = 47802480.

The previous prime is 61525537. The next prime is 61525589. The reversal of 61525541 is 14552516.

It is a happy number.

It is not a de Polignac number, because 61525541 - 2² = 61525537 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61525241) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31310 + ... + 33216.

It is an arithmetic number, because the mean of its divisors is an integer number (4808160).

Almost surely, 2^61525541 is an apocalyptic number.

It is an amenable number.

61525541 is a deficient number, since it is larger than the sum of its proper divisors (15405019).

61525541 is a wasteful number, since it uses less digits than its factorization.

61525541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2344.

The product of its digits is 6000, while the sum is 29.

The square root of 61525541 is about 7843.8218363244. The cubic root of 61525541 is about 394.7769739218.

The spelling of 61525541 in words is "sixty-one million, five hundred twenty-five thousand, five hundred forty-one".