64261051 has 4 divisors (see below), whose sum is σ = 64511352. Its totient is φ = 64010752.

The previous prime is 64261039. The next prime is 64261061. The reversal of 64261051 is 15016246.

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

It is a cyclic number.

It is not a de Polignac number, because 64261051 - 2¹⁹ = 63736763 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64261031) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 124765 + ... + 125278.

It is an arithmetic number, because the mean of its divisors is an integer number (16127838).

Almost surely, 2^64261051 is an apocalyptic number.

64261051 is a deficient number, since it is larger than the sum of its proper divisors (250301).

64261051 is a wasteful number, since it uses less digits than its factorization.

64261051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 250300.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 64261051 is about 8016.2990837418. The cubic root of 64261051 is about 400.5431184720.

Adding to 64261051 its reverse (15016246), we get a palindrome (79277297).

The spelling of 64261051 in words is "sixty-four million, two hundred sixty-one thousand, fifty-one".