61050521 has 6 divisors (see below), whose sum is σ = 71018010. Its totient is φ = 52328976.

The previous prime is 61050511. The next prime is 61050547. The reversal of 61050521 is 12505016.

It can be written as a sum of positive squares in only one way, i.e., 60918025 + 132496 = 7805^2 + 364^2 .

It is not a de Polignac number, because 61050521 - 2¹⁰ = 61049497 is a prime.

It is a super-2 number, since 2×61050521² = 7454332228742882, which contains 22 as substring.

It is an alternating number because its digits alternate between even and odd.

It is a junction number, because it is equal to n+sod(n) for n = 61050493 and 61050502.

It is not an unprimeable number, because it can be changed into a prime (61050511) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 622916 + ... + 623013.

It is an arithmetic number, because the mean of its divisors is an integer number (11836335).

Almost surely, 2^61050521 is an apocalyptic number.

It is an amenable number.

61050521 is a deficient number, since it is larger than the sum of its proper divisors (9967489).

61050521 is a wasteful number, since it uses less digits than its factorization.

61050521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1245943 (or 1245936 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 20.

The square root of 61050521 is about 7813.4832821220. The cubic root of 61050521 is about 393.7583636084.

Adding to 61050521 its reverse (12505016), we get a palindrome (73555537).

The spelling of 61050521 in words is "sixty-one million, fifty thousand, five hundred twenty-one".