61228541 has 12 divisors (see below), whose sum is σ = 69625500. Its totient is φ = 53739840.

The previous prime is 61228513. The next prime is 61228547. The reversal of 61228541 is 14582216.

It can be written as a sum of positive squares in 2 ways, for example, as 51122500 + 10106041 = 7150^2 + 3179^2 .

It is a de Polignac number, because none of the positive numbers 2^k-61228541 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61228547) 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, 5216 + ... + 12233.

It is an arithmetic number, because the mean of its divisors is an integer number (5802125).

Almost surely, 2^61228541 is an apocalyptic number.

It is an amenable number.

61228541 is a deficient number, since it is larger than the sum of its proper divisors (8396959).

61228541 is a wasteful number, since it uses less digits than its factorization.

61228541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17500 (or 17489 counting only the distinct ones).

The product of its digits is 3840, while the sum is 29.

The square root of 61228541 is about 7824.8668359276. The cubic root of 61228541 is about 394.1407182005.

The spelling of 61228541 in words is "sixty-one million, two hundred twenty-eight thousand, five hundred forty-one".