61552407 has 8 divisors (see below), whose sum is σ = 93794176. Its totient is φ = 35172792.

The previous prime is 61552373. The next prime is 61552411. The reversal of 61552407 is 70425516.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 61552407 - 2⁷ = 61552279 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61552487) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1465513 + ... + 1465554.

It is an arithmetic number, because the mean of its divisors is an integer number (11724272).

Almost surely, 2^61552407 is an apocalyptic number.

61552407 is a deficient number, since it is larger than the sum of its proper divisors (32241769).

61552407 is a wasteful number, since it uses less digits than its factorization.

61552407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2931077.

The product of its (nonzero) digits is 8400, while the sum is 30.

The square root of 61552407 is about 7845.5342074329. The cubic root of 61552407 is about 394.8344272147.

The spelling of 61552407 in words is "sixty-one million, five hundred fifty-two thousand, four hundred seven".