61503069 has 4 divisors (see below), whose sum is σ = 82004096. Its totient is φ = 41002044.

The previous prime is 61503047. The next prime is 61503073. The reversal of 61503069 is 96030516.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 61503069 - 2⁵ = 61503037 is a prime.

It is a super-2 number, since 2×61503069² = 7565254992837522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61503089) 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, 10250509 + ... + 10250514.

It is an arithmetic number, because the mean of its divisors is an integer number (20501024).

Almost surely, 2^61503069 is an apocalyptic number.

It is an amenable number.

61503069 is a deficient number, since it is larger than the sum of its proper divisors (20501027).

61503069 is a wasteful number, since it uses less digits than its factorization.

61503069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20501026.

The product of its (nonzero) digits is 4860, while the sum is 30.

The square root of 61503069 is about 7842.3892405312. The cubic root of 61503069 is about 394.7289044083.

The spelling of 61503069 in words is "sixty-one million, five hundred three thousand, sixty-nine".