61545412 has 6 divisors (see below), whose sum is σ = 107704478. Its totient is φ = 30772704.

The previous prime is 61545409. The next prime is 61545439. The reversal of 61545412 is 21454516.

It can be written as a sum of positive squares in only one way, i.e., 44702596 + 16842816 = 6686^2 + 4104^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7693173 + ... + 7693180.

Almost surely, 2^61545412 is an apocalyptic number.

It is an amenable number.

61545412 is a deficient number, since it is larger than the sum of its proper divisors (46159066).

61545412 is a wasteful number, since it uses less digits than its factorization.

61545412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15386357 (or 15386355 counting only the distinct ones).

The product of its digits is 4800, while the sum is 28.

The square root of 61545412 is about 7845.0883997569. The cubic root of 61545412 is about 394.8194699256.

Adding to 61545412 its reverse (21454516), we get a palindrome (82999928).

The spelling of 61545412 in words is "sixty-one million, five hundred forty-five thousand, four hundred twelve".