61465554 has 20 divisors (see below), whose sum is σ = 137728734. Its totient is φ = 20488464.

The previous prime is 61465553. The next prime is 61465561. The reversal of 61465554 is 45556416.

61465554 is a `hidden beast` number, since 61 + 46 + 5 + 554 = 666.

It can be written as a sum of positive squares in only one way, i.e., 60606225 + 859329 = 7785^2 + 927^2 .

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (61465553) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 189547 + ... + 189870.

Almost surely, 2^61465554 is an apocalyptic number.

61465554 is an abundant number, since it is smaller than the sum of its proper divisors (76263180).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61465554 is a wasteful number, since it uses less digits than its factorization.

61465554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 379431 (or 379422 counting only the distinct ones).

The product of its digits is 72000, while the sum is 36.

The square root of 61465554 is about 7839.9970663260. The cubic root of 61465554 is about 394.6486305457.

The spelling of 61465554 in words is "sixty-one million, four hundred sixty-five thousand, five hundred fifty-four".