65515045 has 4 divisors (see below), whose sum is σ = 78618060. Its totient is φ = 52412032.

The previous prime is 65515033. The next prime is 65515057. The reversal of 65515045 is 54051556.

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

It is an interprime number because it is at equal distance from previous prime (65515033) and next prime (65515057).

It can be written as a sum of positive squares in 2 ways, for example, as 23951236 + 41563809 = 4894^2 + 6447^2 .

It is a cyclic number.

It is not a de Polignac number, because 65515045 - 2¹⁷ = 65383973 is a prime.

It is a super-2 number, since 2×65515045² = 8584442242704050, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 65514998 and 65515016.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6551500 + ... + 6551509.

It is an arithmetic number, because the mean of its divisors is an integer number (19654515).

Almost surely, 2^65515045 is an apocalyptic number.

It is an amenable number.

65515045 is a deficient number, since it is larger than the sum of its proper divisors (13103015).

65515045 is a wasteful number, since it uses less digits than its factorization.

65515045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13103014.

The product of its (nonzero) digits is 15000, while the sum is 31.

The square root of 65515045 is about 8094.1364579552. The cubic root of 65515045 is about 403.1317599572.

The spelling of 65515045 in words is "sixty-five million, five hundred fifteen thousand, forty-five".