61551134 has 4 divisors (see below), whose sum is σ = 92326704. Its totient is φ = 30775566.

The previous prime is 61551131. The next prime is 61551157. The reversal of 61551134 is 43115516.

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

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61551131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15387782 + ... + 15387785.

It is an arithmetic number, because the mean of its divisors is an integer number (23081676).

Almost surely, 2^61551134 is an apocalyptic number.

61551134 is a deficient number, since it is larger than the sum of its proper divisors (30775570).

61551134 is a wasteful number, since it uses less digits than its factorization.

61551134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30775569.

The product of its digits is 1800, while the sum is 26.

The square root of 61551134 is about 7845.4530780574. The cubic root of 61551134 is about 394.8317052649.

The spelling of 61551134 in words is "sixty-one million, five hundred fifty-one thousand, one hundred thirty-four".