61223402 has 4 divisors (see below), whose sum is σ = 91835106. Its totient is φ = 30611700.

The previous prime is 61223389. The next prime is 61223411. The reversal of 61223402 is 20432216.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 59737441 + 1485961 = 7729^2 + 1219^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15305849 + ... + 15305852.

Almost surely, 2^61223402 is an apocalyptic number.

61223402 is a deficient number, since it is larger than the sum of its proper divisors (30611704).

61223402 is a wasteful number, since it uses less digits than its factorization.

61223402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30611703.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 61223402 is about 7824.5384528418. The cubic root of 61223402 is about 394.1296909585.

Adding to 61223402 its reverse (20432216), we get a palindrome (81655618).

The spelling of 61223402 in words is "sixty-one million, two hundred twenty-three thousand, four hundred two".